Books (authored)

 
1. Programarea stocastică cu mai multe funcţii-obiectiv. Editura Academiei Române, Bucureşti, 1980, 258 pages.
2. Stochastic Programming with Multiple Objective Functions. Editura Academiei Române and D. Reidel Publishing Company, Dordrecht, The Netherlands, 1984, 334 pages.
3. Metode de rezolvare a problemelor de programare fracţionară. Editura Academiei Române, Bucureşti, 1992, 316 pages.
4. Fractional Programming. Theory, Methods and Applications. Kluwer Academic Publishers, 1997, 426 pages.

1. (with N. Teodorescu, Gh. Boldur, M. Stoica and I. Băncilă) Metode ale cercetării operaţionale în gestiunea întreprinderilor. Editura tehnică, Bucureşti, România, 1972.
2. Aplicaţii ale ciberneticii economice în industria chimică. Editura Academiei Române, Bucureşti, România, 1973.
3. (with D.M. Bătineţu-Giurgiu and I.V. Maftei) Exerciţii şi probleme de analiză matematică pentru clasele a XI-a şi a XII-a. Editura Didactică şi Pedagogică, Bucureşti, România, 1981, 238 pages.

1. (with M. Stoica) O aplicaţie a taxonomiei la stabilirea liniilor tehnologice într-un proces de fabricaţie . Studii şi Cercetări de Calcul Economic şi Cibernetică Economică nr. 3, 1969, 41-49.

An application of taxonomy in determining the technological lines in a manufacturing process. Economic Computation and Economic Cybernetics Studies and Research nr. 4, 1969, 47-54.
2. ( with Gh. Boldur) Elaborarea planului de producţie al unei întreprinderi ţinând seama de mai multe criterii de eficienţă. Studii şi Cercetări de Calcul Economic şi Cibernetică Economică nr. 1, 1970, 13-21.
3. Studiul problemei de afectare folosind teoria grafelor. Studii şi Cercetări de Calcul Economic şi Cibernetică Economică nr. 5, 1970, 53-68.

The utilization of the graph theory in solving the assignment problem. Economic Computation and Economic Cybernetics Studies and Research nr. 2, 1970, 69-84.
4. (avec Gh. Boldur) Méthode de résolution de certains problémes de programmation linéaire multidimensionnelle. Rev. Roumaine Math. Pures Appl., Tome XVI nr. 3, 1971, 313-326.
5. (with M. Stoica) Calculul mediilor statistice cu ajutorul teoriei grafelor. Revista de statistică, nr. 6, 1971, 3-7.

Computation of statistical means with the help of the theory of graphs. Economic Computation and Economic Cybernetics Studies and Research nr. 4, 1971, 29-34.
6. (with M. Stoica) O metodă de rezolvare aproximativă a ecuaţiilor de grad superior. Studii şi cercetări matematice, Tomul 23, nr. 6, 1971, 897-910.
7. (with H. Chelariu) Folosirea metodelor statistico-matematice la elaborarea funcţiilor de calitate în probleme de amestec . Studii şi Cercetări de Calcul Economic şi Cibernetică Economică nr. 4, 1971, 17-25.

Utilization of statistical mathematical methods in working out quality functions in mixture problems. Economic Computation and Economic Cybernetics Studies and Research nr. 3, 1971, 57-66.
8. (with C. N. Sima) Optimizarea transporturilor făinii destinată fondului pieţei. Studii şi Cercetări de Calcul Economic şi Cibernetică Economică nr. 4, 1972, 83-88.
9. (with H. Chelariu and L. Spircu) Modelarea statistico-matematică a funcţiilor de calitate în probleme de amestec. Studii şi Cercetări de Calcul Economic şi Cibernetică Economică nr. 6, 1972, 25-38.

A statistical mathematical modelling of the quality functions in bleding problems. Economic Computation and Economic Cybernetics Studies and Research nr. 4, 1972, 83-97.
10. (with Gh. Boldur) Programarea liniară cu mai multe funcţii obiectiv : Privire de ansamblu. Studii şi cercetări matematice, Tomul 24, nr. 8, 1972, 1169-1191.
11. (with L. Spircu and M. Vatcu) Modelarea matematică a procesului de amestec al produselor petroliere. Studii şi Cercetări de Calcul Economic şi Cibernetică Economică nr. 5, 1973, 35-45.

Mathematical modelling of oil blending process. Economic Computation and Economic Cybernetics Studies and Research nr. 3, 1973, 55-65.
12. Programarea stohastică cu mai multe funcţii obiectiv. Studii şi Cercetări de Calcul Economic şi Cibernetică Economică nr. 2, 1974, 57-74.

Stochastic programming with multiple objective functions. Economic Computation and Economic Cybernetics Studies and Research nr. 1, 1974, 49-67.
13. A three-dimensional transportation problem with a special structured objective function. Bull. Math. Soc. Sci. Math. Roumanie (N.S.), Tome 18(66), 1974, nr. 3-4, 385-397.
14. Notă asupra programării stochastice cu mai multe funcţii-obiectiv având vectorul c aleator. Studii şi cercetări matematice, Tomul 27, nr. 4, 1975, 453-459.
15. On stochastic programming with multiple objective functions. Proceedings of the Fifth Conference on Probability Theory, Braşov 1-6 sept. 1974, Editura Academiei Române, Bucureşti, 1977, 429-436.
16. Asupra problemei lui Kataoka. Studii şi cercetări matematice, Tomul 28, nr. 1, 1976, 95-111.
17. Asupra problemei de risc minim multiplu I: Cazul a două funcţii-obiectiv. Studii şi cercetări matematice, Tomul 28, nr. 5, 1976, 617-623.
18. Asupra problemei de risc minim multiplu II: cazul a r (r>2) funcţii-obiectiv . Studii şi cercetări matematice, Tomul 28, nr. 6, 1976, 723-734.
19. Analiza unor puncte de vedere în programarea matematică cu mai multe funcţii-obiectiv. Studii şi Cercetări de Calcul Economic şi Cibernetică Economică nr. 1, 1976, 37-48.

Analysing several points of view in mathematical programming with several objective functions. Economic Computation and Economic Cybernetics Studies and Research nr. 1, 1976, 17-29.
20. Multiple criteria in stochastic programming. Ph. D. Thesis, Centre for Mathematical Statistics, Bucharest, 1976. (Romanian).
21. (with M. Stoica and E. Scarlat) Asupra problemelor de clasificare de dimensiuni mari. Revista de statistică, nr. 5, 1976, 32-37.

On large-scale classification problems using fuzzy sets. Economic Computation and Economic Cybernetics Studies and Research nr. 1, 1977, 93-102.
22. (with Gh. Orzan) Stabilirea structurii optime a planului la UREMOAS prin programarea multidimensională. Volumul cu lucrările celui de al doilea Simpozion de Informatică şi Conducere, Cluj, 1976, Editura Dacia, Cluj-Napoca, 1977, 23-29.
23. (with M. Păun and E. Dumitrescu ) Sistem informatic pentru conducerea lucrărilor de reparaţii şi revizii generale. In: Probleme actuale de informatică şi conducere. Al III-lea simpozion de informatică, 11-18 mai 1977, Cluj-Napoca, Editura Dacia, Cluj-Napoca, 1977, 91-98.
24. (with Gh. Ciobanu, C. Albu, D. Chira, C. Hartulari, M. Păun, L. Spircu and D. Vişan) An operative scheduling of production system. In: Modern Trends in Cybernetics and Systems. Vol. II. Editura Tehnică and Springer-Verlag, Berlin, Heidelberg, New York, 1977, 883-887.
25. (with M. Stoica) An application of the Markov chains and simulation to the study of some petrochemical processes. Economic Computation and Economic Cybernetics Studies and Research nr. 2, 1977, 63-75.

Also in: L’analyse numérique et la théorie de l’approximation 6(1), 1977, 85-94.
26. Problema Cebîşev stochastică. Funcţia de repartiţie a optimului. Studii şi cercetări matematice, Tomul 30, nr.5, 1978, 567-577.
27. On a class of non-linear fractional programming problems. Rev. Roumaine Math. Pures Appl., Tome XXIII, nr.2, 1978, 285-290.
28. On the transportation problem with multiple objective functions. Bull. Math. Soc. Sci. Math. Roumanie. (N.S.), Tomul 22(70), nr.3, 1978, 315-328.
29. On the multiple minimum-risk problem. Bull. Math. Soc. Sci. Math. Roumanie. (N.S.), Tomul 23(71), nr.4, 1979, 427-437.
30. Sistemul reparaţiilor şi reviziilor utilajelor într-o întreprindere metalurgică. Volumul cu lucrările prezentate la sesiunea ştiinţific㠓Perfecţionarea metodelor de prelucrare a datelor statistice”, Direcţia Centrală de Statistică, 15-17 martie 1979. Direcţia Centrală de Statistică, 1980, 289-299.
31. Applications of the fractional programming. Economic Computation and Economic Cybernetics Studies and Research, Tomul XIV, nr. 1, 1980, 69-86.
32. (with C. Hartulari) Modelarea problemei de programare operativă a producţiei la secţia Plase Sudate I.S.P.S. Buzău. In: Informatică pentru Conducere. Progrese în Informatica Românească, Cluj-Napoca, 1980, 146-148.
33. Asupra unei probleme de programare fracţionară. Buletin Ştiinţific, Seria Tehnică-Matematică, Vol.IV. Institutul de Învăţământ Superior Sibiu, 1981, 37-42.
34. Fractional programming in complex space. The state of the art. Rev. Roumaine Math. Pures Appl., Tome XXVI, nr.3, 1981, 481-491.
35. (with L. Spircu and N. Laszlo) Metode şi algoritmi pentru proiectarea de arhitectură. Studii şi Cercetări de Calcul Economic şi Cibernetică Economică, 15 nr. 1, 1981, 53-60.

Cybernetic system of architecture projecting. Economic Computation and Economic Cybernetics Studies and Research, Vol. XVIII, nr. 3, 1983, 85-94.
36. A survey of methods used for solving the linear fractional programming problems with several objective functions. Fifth Symposium on Operations Research (Univ. Köln 1980). Operations Research Verfahren, Vol. 40. Verlag Anton Hain, Königstein, 1981, 159-162.
37. (with V. Patkar) Approaches for solving a class of non-differentiable non-linear fractional programming problems. Nat. Acad. Sci. Letters (India), Vol. 4, nr.12, 1981, 477-480.
38. Bibliography of fractional programming : 1960-1976. Pure Appl. Math. Sci. (India), 13(1-2), 1981, 35-69.
39. A survey of methods used for solving the problems of fractional programming. The linear case I,II. Bull. Math. Soc. Sci. Math. Roumanie (N.S.) 25 (73), nr.3, 1981, 313-319, ibid. 25 (73), nr.4, 1981, 415-430.
40. (with C. Bilciu) Bibliographic study on the Romanian contribution to the development of cybernetics. In: History of Sciences in Romania. Cibernetics. Editura Academiei Române,Bucharest, 1981, 174-223.
41. (with V. Patkar) On disjunctive linear fractional programming. Economic Computation and Economic Cybernetics Studies and Research XVII, nr. 2, 1982, 87-96.
42. Recent results in stochastic programming with multiple objective functions. In: Multiobjective and Stochastic Optimization. M. Grauer, A. Lewandowski and A.P. Wierzbicki (eds.) IIASA, Collaborative Proceedings Series (Austria) 1982, 79-96.
43. A second bibliography of fractional programming : 1977-1981. Pure Appl. Math. Sci. (India), 17(1-2), 1983, 87-101.
44. (with S. Ţigan) Criteriul riscului minim pentru problema Cebîşev. Lucrările celui de al 4-lea Simpozion “Modelarea cibernetică a proceselor de producţie” , 26-28 mai 1983, vol. I, 338-342.
45. (with S. Ţigan) The minimum-risk approach to special problems of mathematical programming. The distribution function of the optimal value. Mathematica-Revue d’Analyse Numérique et de Théorie de l’Approximation 13(2), 1984, 175-187.
46. (with E. Dumitrescu) Algoritm pentru testarea planarităţii unui graf cu aplicaţii în proiectare. Studii şi Cercetări de Calcul Economic şi Cibernetică Economică, 19(1), 1984, 57-68.
47. (with S. Ţigan) The vectorial minimum-risk problem. Proceedings of the Colloquium on Approximation and Optimization, Cluj-Napoca, October 25-27, 1984, 321-328.
48. (with V. Patkar) Parametric algorithm for a class of disjunctive linear fractional programs. Bull. Math.Soc. Sci. Math. Roumanie (N.S.) 29(77), nr.3, 1985, 279-284.
49. (with S. Ţigan) The minimum-risk approach to max-min bilinear programming. Analele Universităţii “Al.I. Cuza” din Iaşi, Tomul XXXI, , sIIb, 1985, 205-209.
50. (with V. Patkar) Duality for disjunctive linear fractional programming. European J.Oper. Res. 21 (1985), 101-105.
51. (with Şt. Ţigan) The stochastic max-min problem. Methods of Operations Research, Vol.51, 1984, 119-126.

Also in: Cahiers Centre Étude Rech. Opér. 27 (3-4), 1985, 247-254.
52. (with L. Spircu, A. Galupa, E. Dumitrescu and Cs. Fabian) Sistem cibernetic pentru conducerea procesului de elaborare a şarjelor de oţel în cuptoarele electrice. Studii şi Cercetări de Calcul Economic şi Cibernetică Economică, 20(2), 1985, 13-22.

Cybernetic system for the control of steel batch manufacturing process in electric furnaces. Economic Computation and Economic Cybernetics Studies and Research 20(2), 1985, 21-30.
53. (with V. Patkar) A note on nonlinear fractional max-min problem. Nat. Acad. Sci. Letters (India), 8(2), 1985, 39-41.
54. A third bibliography of fractional programming. Pure Appl. Math. Sci. (India), 22(1-2), 1985, 109-122.
55. An overview of separable fractional programming problem. Mathematica-Revue d’Analyse Numérique et de Théorie de l’Approximation 14(1), 1985, 91-96.
56. (with S. Ţigan) The stochastic bottleneck transportation problem. Mathematica-Revue d’Analyse Numérique et de Théorie de l’Approximation, 14(2), 1985, 153-158.
57. (with V. Patkar) A note on duality theory for an indefinite functional programming problem. Studia Universitatis Babeş-Bolyai, Anul XXXI, nr. 1, 1986, 23-26.
58. (with S. Ţigan) Criteriul riscului minim în programarea stocastică. Volumul cu lucrările Sesiunii Ştiinţifice a Centrului de Calcul al Universităţii Bucureşti, 1987, 392-397.
59. (with D.Duca) Mathematical programming in complex space: a comprehensive bibliography. L’Analyse Numérique et la Théorie de l’Approximation 17(2), 1988, 133-140.
60. (with S. Ţigan) A stochastic approach to some linear fractional goal programming problems. Kybernetika (Praga), 24(2), 1988, 139-149.
61. (with S. Ţigan) On some fractional max-min programming models occurring in stochastic linear programming. Seminarul “Theodor Angheluţă”, Cluj-Napoca, 1988, 523-526.
62. (with Cs. Fabian, E. Dumitrescu, L. Spircu and A. Galupa). Sistem informatic pentru conducerea procesului de elaborare a şarjelor de oţel în cuptoare electrice. Studii şi Cercetări de Calcul Economic şi Cibernetică Economică, nr.3, 1988, 27-37.

Information system for the management of steel smelting process in electric furnaces. Economic Computation and Economic Cybernetics Studies and Research XXIV(2-3), 1989, 41-50.
63. (with D.Duca and T. Nishida) Multiple objective linear fractional optimization in complex space. Mathematica Japonica, 35, (1990) 1, 195-203.
64. Overview of different approaches for solving stochastic programming problems with multiple objective functions. In: Stochastic versus Fuzzy Approaches to Multiobjective Mathematical Programming under Uncertainty, R. Slowinski and J. Teghem (eds.), Kluwer Academic Publishers, 1990, 71-101.
65. (with S. Ţigan) Multiobjective mathematical programming with inexact data. In: Stochastic versus Fuzzy Approaches to Multiobjective Mathematical Programming under Uncertainty, R. Slowinski and J. Teghem (eds.), Kluwer Academic Publishers, 1990, 395-418.
66. (with S. Ţigan ) On some fractional programming models occurring in minimum-risk problems. In: Generalized Convexity and Fractional Programming with Economic Applications. A. Cambini, E. Castagnoli, L. Martein, P.Mazzoleni and S. Schaible (Eds.). Proceedings of the International Workshop on "Generalized Concavity, Fractional Programming and Economic Applications" held at the University of Pisa, Italy, May 30 – June 1, 1988. Lecture Notes in Economics and Mathematical Systems, 345, Springer – Verlag, 1990, 295-324.
67. (with V. Patkar) Recent results in disjunctive linear fractional programming. In: Generalized Convexity and Fractional Programming with Economic Applications. A. Cambini, E. Castagnoli, L. Martein, P.Mazzoleni and S. Schaible (Eds.). Proceedings of the International Workshop on "Generalized Concavity, Fractional Programming and Economic Applications" held at the University of Pisa, Italy, May 30 – June 1, 1988. Lecture Notes in Economics and Mathematical Systems, 345, Springer – Verlag, 1990, 99-105.
68. (with E. Dumitrescu and Angela Galupa) Aspecte de eficienţă ale conducerii interactive a procesului de elaborare a şarjelor de aluminiu. In: Realizări în domeniul electronicii profesionale. Vol.2, 1990, 30-33. Institutul de Cercetări şi Proiectări Electronice, Bucureşti, România.
69. (with V.N. Patkar) A disjunctive linear fractional max-min problem . Portugaliae Mathematica, Vol.48, Fasc.1, 1991, 67-73.
70. (with S. Ţigan) On a procedure for some separable programming problems. Fundations of Computing and Decision Sciences (Poland) 16 (3-4), 1991, 149-159.
71. (with S. Ţigan) On bicriterion max-min fractional programming problem. L’Analyse Numérique et la Théorie de l’Approximation 20(1-2), 1991, 117-125.
72. A fourth bibliography of fractional programming. Optimization, 23 (1992)1, 53-71
73. (with S. Ţigan, D.D. Lozovanu and D.I.Solomon) On a parametrical method for solving bicriterion max-min fractional problems. Buletinul Academiei de Ştiinţe a Republicii Moldova, 3(9), 1992, 56-61
74. Stochastic programming with multiple fractile criteria. Rev. Roumaine Math. Pures Appl. 37 (1992) 10, 939-944.
75. (with S. Ţigan) On a variant of bicriterion max-min fractional problem. Proceedings of the International Workshop on Multicriteria Decision Making, Liblice Castle, Czechoslovakia, 1991. The Institute of Economics, Czechoslovak Academy of Sciences, Prague, 1992, 152-161.
76. (with S. Ţigan) On some methods for fractional programming with inexact data. Stud. Cerc. Mat. 45 (1993)6, 517-532.
77. (with Şt. Mititelu) Invexity at a point: generalisations and clasification. Bull. Austral. Math.Soc. 48 (1993)1, 117-126.
78. (with D.I. Solomon) Metode de descompunere în programarea fracţionară separabilă. Studii şi Cercetări de Calcul Economic şi Cibernetică Economică, 28 (1994)1, 17-25.
79. (with Şt. Ţigan) Fractional programming under uncertainty. In: Generalized Convexity. S. Komlósi, T. Rapczák and S. Schaible (eds.) Proceedings of the IV^th International Workshop on Generalized Convexity held at Janus Pannonius University, Pécs, Hungary, August 31-September 2, 1992. Lecture Notes in Economics and Mathematical Systems, 405, Springer-Verlag, 1994, 322-333.
80. (with Şt. Ţigan) Observaţii asupra programării matematice inexacte. Zilele Academice Clujene. Simpozionul “Matematica actuală şi aplicaţiile ei”. Omagiu lui Tiberiu Popoviciu, 27 oct.1995, Cluj-Napoca, 1995, 15-16.
81. (with S. Ţigan) Asupra sensitivităţii valorii optimale pentru problema de programare liniar fracţionară. Seminarul itinerant “Tiberiu Popoviciu” de ecuaţii functionale, aproximare şi convexitate, Cluj-Napoca, 16-21 mai 1995, Universitatea “Babeş-Bolyai” din Cluj-Napoca, Facultatea de Matematică şi Informatică, 103-106, 1995.
82. (with Şt. Mititelu) On the quasi-invexity and semistrict quasi-invexity at a point. Stud. Cerc. Mat. 47(1995) 3-4, 313-316.
83. (with J. Teghem) Duality for fractional transportation problem. Cahiers du C.E.R.O. 37 (1995), 121-133.
84. (with V. Preda and A. Bătătorescu) Optimality and duality in nonlinear programming involving semilocally preinvex and related functions. Report nr.86, Universita di Pisa, Dipartimento di Statistica e Matematica Applicata All’ Economia, Pisa, December 1994. Also in: J. Inform. Optim. Sci. (India), 17 (1996) 3, 585-596.
85. (with Şt. Ţigan) A note on duality in multiple right-hand choice pseudo-monotonic programming. Seminarul itinerant “Tiberiu Popoviciu” de ecuaţii funcţionale, aproximare şi convexitate, Cluj-Napoca, 21-25 mai 1996, 155-160.
86. (with S. Ţigan) Methods for solving stochastic bilinear fractional max-min problem. RAIRO/Recherche Opérationnelle/Operations Research 30 (1996) 1, 81-98.
87. (with V. Preda) Generalized Mond-Weir duality for multiobjective nonsmooth programming. In : Multiple Criteria Decision Making. Günter Fandel, Tomas Gal (Eds.) in collaboration with Thomas Hanne. Proceedings of the Twelfth International Conference, held at Hagen, Germany, June 19-23, 1995. Lecture Notes in Economics and Mathematical Systems, 448, Springer, 1997, 55-63.
88. (with Şt. Ţigan) On duality in multiple right-hand choice symmetric pseudo-monotonic programming. Seminarul itinerant “Tiberiu Popoviciu” de ecuaţii funcţionale, aproximare şi convexitate, Cluj-Napoca, 21-26 mai 1997, 111-120.
89. (with Şt. Ţigan) On sensitivity coefficient for the linear-fractional programming. Proceedings of the scientific communications meeting of the "Aurel Vlaicu" University of Arad. Fourth Edition "25 years of high level technical education in Arad", Arad, 1997 October 30-31, Vol. 1. Mathematics, 159-166.
90. (with V. Preda) Duality in multiple objective programming involving semilocally preinvex and related functions. Glasnik Matematički 32(52) (1997), 153-165.
91. (with Şt. Ţigan ) Duality for multiple right-hand pseudomonotonic programming. Rev. Analyse Numér. Théorie Approx. 26 (1997)1-2, 229-235.
92. (with Şt. Mititelu) Optimality and algorithm for generalized invex Chebyshev problem. Investigaçao Operacional 17 (1997)2, 151-161.
93. (with V. Preda) On optimality and duality in multiobjective nonsmooth programming. In: Advances in Multiple Objective and Goal Programming. R. Caballero, F. Ruiz, R.E. Steuer (eds.). Proceedings of the Second International Conference on Multi-Objective Programming and Goal Programming. Torremolinos, Spain, May 16-18, 1996. Lecture Notes in Economics and Mathematical Systems, 455, Springer, 1997, 177-187.
94. (with V. Preda) Mond-Weir duality for multiobjective mathematical programming with n-set functions. Analele Universităţii Bucureşti, Matematică-Informatică. Anul XLVI, 1997, 89-97.
95. (with A. Cambini and L. Martein) Some developments in bicriteria fractional programming. Lecture Notes in Operations Research 2, Ding-Zhu DU, Xiang-Sun ZHANG, Kan CHENG (eds.) Operations Research and its Applications. Second International Symposion, ISORA’96 Guilin, R.P. China, December 11-14, 1996, Proceedings, World Publishing Corporation, 1997.
96. (with Şt. Ţigan) Numerical methods for solving some special max-min programming problems. In: Research on Theory of Allure, Aproximation, Convexity and Optimization. Elena Popoviciu (ed.), Editura SRIMA, Cluj-Napoca, Romania, 1999, 287-307.
97. (with R. Caballero, E. Cerdá and M.M. Muńoz) The stochastic bottleneck linear programming problem. Top 7(1999)1, 123-143.
98. (with V. Preda) Mond-Weir duality for multiobjective mathematical programming of n-set functions. Rev. Roumaine Math. Pures Appl. 44(1999) 4, 629-644.
99. A fifth bibliography of fractional programming. Optimization 45 (1999) 1-4, 343-367.
100. (with Cambini and L. Martein) A survey of bicriteria fractional problems. Advanced Modeling and Optimization. An Electronic International Journal 1 (1999) 1, 9-46.
101. (with P. Lara)  Fractional programming: a tool for the assessment of sustainability, Agricultural Systems 62 (1999)11, pp.131-141.
102. (with Şt. Ţigan) On Rohn’s relative sensitivity coefficient on the optimal value for a linear-fractional program.  Mathematica Bohemica, 125 (2000)2, 227-234.
103. Fractional programming with semilocally preinvex and related functions. Proc. Ro. Acad. Series A, Volume 1, Number 1/2000, 21-24.
104. (with Elena Popescu) Methods for correcting and solving inconsistent linear inequality systems. Proceedings. The Seventh Conference on Nonlinear Analysis, Numerical Analysis, Applied Mathematics and Computer Science. Eforie Nord, May 27-30, 1999. Part.II-Applied Mathematics and Computer Science. “Ovidius” University Press, Constanţa 2000, pp.39-46.
105. (with Elena Popescu) An algorithm for solving convex programs subject to box constraints. Analele Univ. Bucureşti, Matematica, Anul XLIX (2000) 1, 99-108.
106. Multiobjective nonlinear programming involving semilocally B-preinvex and related function. Proc. Romanian Acad. Ser.A 1 (2000), 3, pp.147-151.
107. (with Şt. Ţigan) Continuous time linear fractional programming. The minimun-risk approach. RAIRO Oper. Res. 34(2000), pp.397-409.
108. (with A. Cambini and L. Martein) A survey of bicriteria fractional problems, Mathematical Reports 2(52)(2000)2, pp.127-162.
109. (with B. Pop) Metodă de rezolvare a problemelor de programare liniar-fracţionare complet fuzzy-ficate, Proceedings of the Annual Meeting of the Romanian Society of Mathematical Sciences, Braşov, May 24-26, vol.I, 217-226.
110. (with R. Caballero, E. Cerdá, M.M. Muńoz and L. Rey)  Efficient solution concepts and their relations in stochastic multiobjective programming. In: J. Optim. Theory Appl. 110 (2001), 1,pp. 53-74.
111. (with  Şt. Ţigan and Iliana Ţigan) Specific numerical methods for solving some special max-min programming problems involving generalized convex functions In: Nicolas Hadjisavvas, Juan Ebrique Martinez-Legaz, Jean-Paul Penot (eds.) Generalized Convexity and Generalized Monotonicity. Proceedings of the 6th International Symposium on Generalized Convexity/ Monotonicity, Samos, September 1999. Lecture Notes in Economics and Mathematical Systems 502, Springes-Verlag, 2001, 395-410.
112. ( with V. Preda) Optimality and Wolfe duality for multiobjective programming problems involving n-set functions. In: Nicolas Hadjisavvas, Juan Ebrique Martinez-Legaz, Jean-Paul Penot (eds.) Generalized Convexity and Generalized Monotonicity. Proceedings of the 6th International Symposium on Generalized Convexity/ Monotonicity, Samos, September 1999. Lecture Notes in economics and Mathematical Systems 502, Springes-Verlag, 2001, pp. 349-361.
113. (with Bogdana Pop) On a fuzzy set approach to solving multiple objective linear fractional programming problem. Fuzzy Sets and Systems