68. “Approximation methods and optimality conditions in nonsmooth control systems”, in the 10th USSR Meeting on Control Problems, No. 1, Alma Ata, 1986, 157-160. (Russian)

67. “On the theory of difference approximation for optimal control problems”, Dokl. Akad. Nauk BSSR 30 (1986), 1064-1067. (Russian; English summary)

66. (with S.B. Gorelik) “Legendre-Klebsh and Kelley type conditions in nonlinear neutral systems with applications to existence theorems in optimal control”, Depon. VINITI, No. 4057-85, Moscow, 1985, 47 pp. (Russian; summary in Izvest. Akad. Nauk BSSR. Ser. Fiz. Mat. Nauk, No. 5, 1986, p. 119)

65. “Method of stabilization of the groundwater level in engineering hydroreclamation systems, USSR certificate (patent) No. 1170038, MKI E02 B 11/00. Published in Bull. Inventions and Discoveries, No. 28, Moscow, 1985, p. 100.

64. (with S.B. Gorelik) “Higher order necessary optimality conditions in hereditary systems of neutral type”, Depon. VINITI, No. 1154-85, Moscow, 1985, 51 pp. (Russian; summary in Izvest. Akad. Nauk BSSR. Ser. Fiz. Mat Nauk, No. 6, 1985, 111-112)

63. “On the theory of computation and design of automatized two-way engineering hydroreclamation systems”, in Konstr. Met. Rasch. Melir. Sist., BelNII Melior., Minsk, 1985, 47-53. (Russian)

62. “On the theory of numerical methods for solving optimal control problems”, in Numerical Methods and Applications, Bulgarian Academy of Science, Sofia, 1985, 442-450.

61. “On necessary conditions for an extremum in nonsmooth optimization”, Dokl. Akad. Nauk SSSR 283 (1985), 816-822. (Russian; English transl. in Soviet Math. Dokl. 32 (1985), 215-220)

60. “Necessary optimality conditions for singular controls in the class of measurable functions”, Izvest. Akad. Nauk BSSR. Ser. Fiz. Mat. Nauk, No. 5, 1985, 32-39. (Russian; English summary)

59. “Optimal control of the groundwater regime on two-way engineering reclamation systems”, Vodn. Resursy, No. 3, 1985, 59-70. (Russian; English transl. in Water Resource 12 (1986), 244-253).

58. (with A.M. Sasonkin) “Duality and optimality conditions in control problems for functional differential systems of neutral type”, Differen. Uravn .21 (1985), 788-798. (Russian; English transl. in Diff. Equations 21 (1985), 532-540)

57. (with P.V. Gaishun) “Necessary optimality conditions for minimax control problems with constraints”, Izvest. Akad. Nauk BSSR. Ser. Fiz. Mat. Nauk, No. 1, 1985, 18-25. (Russian; English summary)

56. “Nonsmooth analysis with nonconvex generalized differentials and adjoint maps”, Dokl. Akad. Nauk BSSR 28 (1984), 976-979. (Russian; English summary)

55. (with V.P. Selchonok), “Recommendations on control and design of automatized hydroreclamation systems”, BelNII Melior., Minsk, 1984, 40 pp. (Russian)

54. “A new control algorithm for the groundwater regime”, in Vopr. Proek. Ekspl. Melior. Sist., BelNII Melior., Minsk, 1984, 56-66. (Russian)

53. “Duality theory in systems with aftereffect”, Prikl. Mat. Mekh. 48 (1984), 622-631. (Russian; English transl. in J. Appl. Math. Mech. 48 (1984), 440-447)

52. “Controllability, observability, and duality in dynamical systems with aftereffect”, Avtom. Telemekh., No. 8, 1984, 68-77. (Russian; English transl. in Automat. Remote Control 45 (1984), 1019-1027)

51. (with P.V. Gaishun) “Necessary optimality conditions in minimax terminal control problems with varying time and nonsmooth constraints”, Depon. VINITI, Moscow, 1983, 48 pp. (Russian; summary in Isvest. Akad. Nauk BSSR. Ser. Fiz. Mat. Nauk, No. 6, 1983, 103-104)

50. (with P.V. Gaishun) “Minimax optimal control problems with varying time and constraints on trajectories of nonsmooth systems”, Inst. Mat. Akad. Nauk BSSR, No. 13/17, Minsk, 1983, 31 pp. (Russian)

49. “Optimal control and parametric design of the two-way engineering reclamation systems”, in Proc. Internat. Symposium on Optimiz. Water Resources, Bulgarian Academy of Science, Varna, 1983, 262-271.

48. “On the duality principle in the controllability and observability theory for functional differential equations of neutral type”, Dokl. Akad. Nauk BSSR 27 (1983), 110-113. (Russian; English summary)

47. (with R. Gabasov and F.M. Kirillova) “The epsilon-maximum principle for suboptimal controls”, Dokl. Akad. Nauk SSSR 268 (1983), 525-529. (Russian; English transl. in Soviet Math. Dokl. 27 (1983), 95-99)

46. (with A.L. Dontchev) “Relaxation and well-posedness of nonlinear optimal processes, Syst. Contr. Lett. 3 (1983), 177-179.

45. “Necessary optimality conditions for measurable singular regimes and existence theorems of optimal controls”, Depon. VINITI, No. 1321-82, Moscow, 1982, 85 pp. (Russian; summary in Izvest. Akad. Nauk BSSR. Ser. Fiz. Mat. Nauk, No. 6, 1982, 117-118)

44. “Duality in control and observation problems for hereditary systems”, C. R. Acad. Bulgare. Sci. 35 (1982), 1643-1646.

43. (with V.P. Selchonok) “Algorithms, parametres, and stability of automatized hydroreclamation systems”, in Nov. Konstr. Melior. Sist., Minsk, 1982, 14-27. (Russian)

42. “Approximate controllability of linear retarded systems with constraints and dual problems od ideal observability”, Dokl. Akad. Nauk BSSR26 (1982), 201-204. (Russian; English summary)

41. “Extremality and duality in the controllability theory for linear retarded systems”, in Proc. 2nd Conference on Functional Differential Equations and Related Topics, Polish Academy of Science, Zielona Gora, 1981, 244-250.

40. (with V.P. Selchonok) “Optimal stabilization of groundwater levels in automatized hydroreclamatio systems”, Nauch. Osnov. Proect. Stroit. Gidromelior. Sist. 1 (1981), 12-24. (Russian)

39. “Penalty functions and necessary optimality conditions for nonsmooth and nonconvex optimization problems”, Uspekhi Mat. Nauk 36 (1981), 215-216. (Russian; English transl. in Russian Math. Surv. 36 (1981), 242-243)