Iskenderova, M. B. On the Abel summability of \(n\)-multiple expansions with respect to root functions of boundary value problems and convolution operators. (Russian) Zbl 0822.40002 Differ. Uravn. 28, No. 9, 1647-1650 (1992). MSC: 40G10 34B05 34L10 PDFBibTeX XMLCite \textit{M. B. Iskenderova}, Differ. Uravn. 28, No. 9, 1647--1650 (1992; Zbl 0822.40002)
Strizhkov, V. A. On a criterion of global solvability of singularly perturbed nonlinear problems. (Russian) Zbl 0826.34058 Differ. Uravn. 28, No. 9, 1644-1646 (1992). MSC: 34E15 PDFBibTeX XMLCite \textit{V. A. Strizhkov}, Differ. Uravn. 28, No. 9, 1644--1646 (1992; Zbl 0826.34058)
Stolyarov, V. V. On a quadratic system with a limit cycle surrounded by the loop of a saddle separatrix. (Russian) Zbl 0826.34034 Differ. Uravn. 28, No. 9, 1643-1644 (1992). MSC: 34C05 PDFBibTeX XMLCite \textit{V. V. Stolyarov}, Differ. Uravn. 28, No. 9, 1643--1644 (1992; Zbl 0826.34034)
Filippov, V. M.; Tishchenko, A. N. The direct variational method for operator equations \(u^ k+C^ mu=f, k=1,2; m\in N\). (Russian) Zbl 0826.34063 Differ. Uravn. 28, No. 9, 1642-1643 (1992). MSC: 34G20 35K15 35L15 49R50 PDFBibTeX XMLCite \textit{V. M. Filippov} and \textit{A. N. Tishchenko}, Differ. Uravn. 28, No. 9, 1642--1643 (1992; Zbl 0826.34063)
Paskalev, G. P. On investigation of a boundary value problem for ultraparabolic equations with constant coefficients by the variational method. (Russian) Zbl 0824.35065 Differ. Uravn. 28, No. 9, 1640-1642 (1992). MSC: 35K70 35A15 35D05 PDFBibTeX XMLCite \textit{G. P. Paskalev}, Differ. Uravn. 28, No. 9, 1640--1642 (1992; Zbl 0824.35065)
Panfilov, N. G. On the solution of the Cauchy problem for a nonlinear, singularly perturbed system on the semi-infinite interval. (Russian) Zbl 0826.34055 Differ. Uravn. 28, No. 9, 1638-1639 (1992). MSC: 34E15 34A12 PDFBibTeX XMLCite \textit{N. G. Panfilov}, Differ. Uravn. 28, No. 9, 1638--1639 (1992; Zbl 0826.34055)
Malyshev, Yu. V.; Zakharov, V. P. Detection of a limit cycle of the Liénard equation with the help of generalized Lyapunov functions. (Russian) Zbl 0826.34031 Differ. Uravn. 28, No. 9, 1635-1638 (1992). MSC: 34C05 34D20 PDFBibTeX XMLCite \textit{Yu. V. Malyshev} and \textit{V. P. Zakharov}, Differ. Uravn. 28, No. 9, 1635--1638 (1992; Zbl 0826.34031)
Dovzhik, T. V. On stability of discrete processes with perturbations. (Russian) Zbl 0826.93053 Differ. Uravn. 28, No. 9, 1633-1635 (1992). MSC: 93D05 93C55 93C73 93D30 34C29 PDFBibTeX XMLCite \textit{T. V. Dovzhik}, Differ. Uravn. 28, No. 9, 1633--1635 (1992; Zbl 0826.93053)
Bonchev, E. K. Error estimation in case of numerical solution of boundary value problems for an ordinary differential equation with the help of \(\tau\)-moduli. (Russian) Zbl 0823.65082 Differ. Uravn. 28, No. 9, 1630-1633 (1992). MSC: 65L70 65L10 65L12 34B05 PDFBibTeX XMLCite \textit{E. K. Bonchev}, Differ. Uravn. 28, No. 9, 1630--1633 (1992; Zbl 0823.65082)
Berezkina, N. S.; Martynov, I. P. On solutions of a nonlinear partial differential system. (Russian) Zbl 0823.35033 Differ. Uravn. 28, No. 9, 1627-1630 (1992). MSC: 35G20 PDFBibTeX XMLCite \textit{N. S. Berezkina} and \textit{I. P. Martynov}, Differ. Uravn. 28, No. 9, 1627--1630 (1992; Zbl 0823.35033)
Bentrad, A. On the Cauchy problem for a class of operators with branching. (Russian) Zbl 0824.35021 Differ. Uravn. 28, No. 9, 1625-1627 (1992). MSC: 35G10 35A20 PDFBibTeX XMLCite \textit{A. Bentrad}, Differ. Uravn. 28, No. 9, 1625--1627 (1992; Zbl 0824.35021)