Perov, A. I.; Khatskevich, V. L. On some local theorems for the existence of periodic solutions. (Russian) Zbl 0497.34029 Izv. Vyssh. Uchebn. Zaved., Mat. 1982, No. 7(242), 50-60 (1982). MSC: 34C25 34A34 PDFBibTeX XMLCite \textit{A. I. Perov} and \textit{V. L. Khatskevich}, Izv. Vyssh. Uchebn. Zaved., Mat. 1982, No. 7(242), 50--60 (1982; Zbl 0497.34029)
Arkhipova, A. A. On properties of generalized solutions of the Euler equation of a certain class of non-smooth functionals. (Russian) Zbl 0495.49029 Izv. Vyssh. Uchebn. Zaved., Mat. 1982, No. 4(239), 5-8 (1982). MSC: 49Q20 35D10 35J20 PDFBibTeX XMLCite \textit{A. A. Arkhipova}, Izv. Vyssh. Uchebn. Zaved., Mat. 1982, No. 4(239), 5--8 (1982; Zbl 0495.49029)
Chekmarev, T. V. Das Dirichletproblem für ein System Euler-Poisson-Darbouxscher Gleichungen in einer Halbebene und einem Streifen senkrecht zu einer Entartungslinie. (Russian) Zbl 0454.35026 Izv. Vyssh. Uchebn. Zaved., Mat. 1980, No. 6(217), 66-71 (1980). MSC: 35F15 35Q05 35A05 PDFBibTeX XMLCite \textit{T. V. Chekmarev}, Izv. Vyssh. Uchebn. Zaved., Mat. 1980, No. 6(217), 66--71 (1980; Zbl 0454.35026)
Chekmarev, T. V. Die Lösung des Darbouxproblems und seine Anwendung auf das Goursatproblem. (Russian) Zbl 0444.35066 Izv. Vyssh. Uchebn. Zaved., Mat. 1980, No. 5(216), 67-72 (1980). MSC: 35Q05 35K65 35J70 PDFBibTeX XMLCite \textit{T. V. Chekmarev}, Izv. Vyssh. Uchebn. Zaved., Mat. 1980, No. 5(216), 67--72 (1980; Zbl 0444.35066)
Bezverkhov, V. A. An approximate solution of singular integral and integro-differential equations in the degenerate case. (Russian) Zbl 0442.65127 Izv. Vyssh. Uchebn. Zaved., Mat. 1979, No. 6(205), 6-15 (1979). MSC: 65R20 45E05 45J05 65J10 PDFBibTeX XMLCite \textit{V. A. Bezverkhov}, Izv. Vyssh. Uchebn. Zaved., Mat. 1979, No. 6(205), 6--15 (1979; Zbl 0442.65127)