Serovaiskii, S. Ya. Quasiconjugate systems and necessary optimality conditions in nonlinear infinite-dimensional systems. (Russian) Zbl 0691.49005 Izv. Vyssh. Uchebn. Zaved., Mat. 1989, No. 4(323), 61-69 (1989). MSC: 49J20 49K20 PDFBibTeX XMLCite \textit{S. Ya. Serovaiskii}, Izv. Vyssh. Uchebn. Zaved., Mat. 1989, No. 4(323), 61--69 (1989; Zbl 0691.49005)
Arutyunyan, S. Kh. On some classes of submanifolds of pseudo-Euclidean space \(E^{n+1}_{2(n+1)}\). (Russian) Zbl 0682.53026 Izv. Vyssh. Uchebn. Zaved., Mat. 1989, No. 4(323), 17-21 (1989). Reviewer: V.Fomenko MSC: 53B25 PDFBibTeX XMLCite \textit{S. Kh. Arutyunyan}, Izv. Vyssh. Uchebn. Zaved., Mat. 1989, No. 4(323), 17--21 (1989; Zbl 0682.53026)
Yudin, M. D. On the approximation of distributions of sums of \(m_ n\)-dependent variables by distributions of class L. (Russian) Zbl 0681.60027 Izv. Vyssh. Uchebn. Zaved., Mat. 1989, No. 4(323), 83-88 (1989). Reviewer: Su Chun MSC: 60F05 PDFBibTeX XMLCite \textit{M. D. Yudin}, Izv. Vyssh. Uchebn. Zaved., Mat. 1989, No. 4(323), 83--88 (1989; Zbl 0681.60027)
Kats, I. S. An unnoticed nonoscillation condition and its consequences. (Russian) Zbl 0679.45005 Izv. Vyssh. Uchebn. Zaved., Mat. 1989, No. 4(323), 46-51 (1989). Reviewer: J.Chrastina MSC: 45J05 45C05 34C10 34L99 PDFBibTeX XMLCite \textit{I. S. Kats}, Izv. Vyssh. Uchebn. Zaved., Mat. 1989, No. 4(323), 46--51 (1989; Zbl 0679.45005)
Kakichev, V. A.; Lepskij, A. E. Some properties of holomorphic functions of a countable number of arguments. (Russian) Zbl 0679.32006 Izv. Vyssh. Uchebn. Zaved., Mat. 1989, No. 4(323), 35-46 (1989). Reviewer: M.Jarnicki MSC: 32A10 32A07 PDFBibTeX XMLCite \textit{V. A. Kakichev} and \textit{A. E. Lepskij}, Izv. Vyssh. Uchebn. Zaved., Mat. 1989, No. 4(323), 35--46 (1989; Zbl 0679.32006)
Spitkovskij, I. M.; Tashbaev, A. M. To the question of effective factorization of matrix functions. (Russian) Zbl 0679.30032 Izv. Vyssh. Uchebn. Zaved., Mat. 1989, No. 4(323), 69-76 (1989). Reviewer: Z.Binderman MSC: 30E25 45E10 PDFBibTeX XMLCite \textit{I. M. Spitkovskij} and \textit{A. M. Tashbaev}, Izv. Vyssh. Uchebn. Zaved., Mat. 1989, No. 4(323), 69--76 (1989; Zbl 0679.30032)