Minyuk, S. A. On the theory of controllability of systems with aftereffect in functional spaces involving constraints on the control. (Russian) Zbl 0724.93006 Differ. Uravn. 25, No. 11, 2003-2004 (1989). Reviewer: Petko Hr.Petkov (Sofia) MSC: 93B05 34K35 93C05 PDFBibTeX XMLCite \textit{S. A. Minyuk}, Differ. Uravn. 25, No. 11, 2003--2004 (1989; Zbl 0724.93006)
Samarskaya, T. A. On a generalization of Steklov’s decomposability theorem to the case of nonlocal boundary conditions. (Russian) Zbl 0714.34031 Differ. Uravn. 25, No. 11, 2008-2010 (1989). MSC: 34B10 34L10 42A50 42A65 PDFBibTeX XMLCite \textit{T. A. Samarskaya}, Differ. Uravn. 25, No. 11, 2008--2010 (1989; Zbl 0714.34031)
Fedoryuk, M. V. Diffraction of waves on a triaxial ellipsoid. (Russian) Zbl 0699.35052 Differ. Uravn. 25, No. 11, 1990-1995 (1989). Reviewer: A.Müller-Rettkowski MSC: 35J05 35C10 PDFBibTeX XMLCite \textit{M. V. Fedoryuk}, Differ. Uravn. 25, No. 11, 1990--1995 (1989; Zbl 0699.35052)
Uteshev, A. Yu. On the question of existence of a Lyapunov polynomial function. (Russian) Zbl 0698.34045 Differ. Uravn. 25, No. 11, 2010-2013 (1989). Reviewer: L.Hatvani MSC: 34D20 PDFBibTeX XMLCite \textit{A. Yu. Uteshev}, Differ. Uravn. 25, No. 11, 2010--2013 (1989; Zbl 0698.34045)
Antonevich, A. B.; Khodzhaj, I. On a class of integro-difference equations with oscillating coefficients. (Russian) Zbl 0697.45002 Differ. Uravn. 25, No. 11, 1997-1999 (1989). Reviewer: R.Duduchava MSC: 45E10 PDFBibTeX XMLCite \textit{A. B. Antonevich} and \textit{I. Khodzhaj}, Differ. Uravn. 25, No. 11, 1997--1999 (1989; Zbl 0697.45002)
Khramtsov, O. V. Controllability of linear Cauchy-Kovalevskaya systems with constant coefficients. (Russian) Zbl 0696.93007 Differ. Uravn. 25, No. 11, 2013-2014 (1989). Reviewer: V.M.Marcenko MSC: 93B05 93B03 93C20 93C05 PDFBibTeX XMLCite \textit{O. V. Khramtsov}, Differ. Uravn. 25, No. 11, 2013--2014 (1989; Zbl 0696.93007)
Aleroev, T. S.; Aleroev, B. I. On eigenfunctions and eigenvalues of a not self-adjoint operator. (Russian) Zbl 0696.34016 Differ. Uravn. 25, No. 11, 1996-1997 (1989). Reviewer: T.Reginska MSC: 34L99 42C30 PDFBibTeX XMLCite \textit{T. S. Aleroev} and \textit{B. I. Aleroev}, Differ. Uravn. 25, No. 11, 1996--1997 (1989; Zbl 0696.34016)
Pak, V. E.; Chentsov, A. G. Some topological properties of generalized solutions of nonlinear control systems. (Russian) Zbl 0695.93041 Differ. Uravn. 25, No. 11, 2004-2005 (1989). Reviewer: C.Mladenova MSC: 93C10 93C15 PDFBibTeX XMLCite \textit{V. E. Pak} and \textit{A. G. Chentsov}, Differ. Uravn. 25, No. 11, 2004--2005 (1989; Zbl 0695.93041)
Panfilov, N. G.; Rozhkov, V. I. Asymptotics of solutions of boundary value problems for quasilinear singularly perturbed systems. (Russian) Zbl 0695.34059 Differ. Uravn. 25, No. 11, 2005-2008 (1989). Reviewer: J.J.Telega MSC: 34E15 34E05 34B10 PDFBibTeX XMLCite \textit{N. G. Panfilov} and \textit{V. I. Rozhkov}, Differ. Uravn. 25, No. 11, 2005--2008 (1989; Zbl 0695.34059)
Burgmeier, P. On the controllability of systems with distributed parameters described by m-th order Goursat-Darboux systems. (Russian) Zbl 0694.93010 Differ. Uravn. 25, No. 11, 1947-1956 (1989). Reviewer: V.Veliov MSC: 93B05 93C20 PDFBibTeX XMLCite \textit{P. Burgmeier}, Differ. Uravn. 25, No. 11, 1947--1956 (1989; Zbl 0694.93010)
Kolesov, A. Yu.; Mishchenko, E. F. On a problem of Pontryagin. (Russian) Zbl 0694.34031 Differ. Uravn. 25, No. 11, 1888-1891 (1989). Reviewer: V.G.Angelov MSC: 34C25 34C30 PDFBibTeX XMLCite \textit{A. Yu. Kolesov} and \textit{E. F. Mishchenko}, Differ. Uravn. 25, No. 11, 1888--1891 (1989; Zbl 0694.34031)
Bud’ko, T. S.; Yablonskij, A. I. On a general method for determining solutions with infinite limit values of the components of autonomous differential systems with rational right- hand sides. (Russian) Zbl 0694.34006 Differ. Uravn. 25, No. 11, 1852-1856 (1989). Reviewer: V.G.Angelov MSC: 34A25 PDFBibTeX XMLCite \textit{T. S. Bud'ko} and \textit{A. I. Yablonskij}, Differ. Uravn. 25, No. 11, 1852--1856 (1989; Zbl 0694.34006)
Kadelburg, Eh.; Martinović, M. The spectral function of a second order functional-differential operator. (Russian) Zbl 0693.34070 Differ. Uravn. 25, No. 11, 1882-1888 (1989). Reviewer: M.Tvrdy MSC: 34K10 34L99 PDFBibTeX XMLCite \textit{Eh. Kadelburg} and \textit{M. Martinović}, Differ. Uravn. 25, No. 11, 1882--1888 (1989; Zbl 0693.34070)
Koplatadze, R. G. On differential equations with deviating argument having properties A and B. (Russian) Zbl 0693.34068 Differ. Uravn. 25, No. 11, 1897-1909 (1989). Reviewer: L.Janos MSC: 34K05 PDFBibTeX XMLCite \textit{R. G. Koplatadze}, Differ. Uravn. 25, No. 11, 1897--1909 (1989; Zbl 0693.34068)
Volkov, V. E. On the boundedness of the number of orthogonal solutions of the equation \(-u''+q(x)u=\lambda u\). (Russian) Zbl 0693.34037 Differ. Uravn. 25, No. 11, 1862-1866 (1989). Reviewer: D.Bobrowski MSC: 34C11 PDFBibTeX XMLCite \textit{V. E. Volkov}, Differ. Uravn. 25, No. 11, 1862--1866 (1989; Zbl 0693.34037)
Tsapenko, N. E. New formulae for approximate solution of one-dimensional wave equation. (Russian) Zbl 0693.34008 Differ. Uravn. 25, No. 11, 1941-1946 (1989). Reviewer: L.Janos MSC: 34A45 34C20 PDFBibTeX XMLCite \textit{N. E. Tsapenko}, Differ. Uravn. 25, No. 11, 1941--1946 (1989; Zbl 0693.34008)
Bojchenko, V. A.; Leonov, G. A. On the Hausdorff dimension of attractors of a Lorentz system. (Russian) Zbl 0692.34055 Differ. Uravn. 25, No. 11, 1999-2000 (1989). Reviewer: V.Răsvan MSC: 34D20 37D45 PDFBibTeX XMLCite \textit{V. A. Bojchenko} and \textit{G. A. Leonov}, Differ. Uravn. 25, No. 11, 1999--2000 (1989; Zbl 0692.34055)
Ivanov, M. A. On topological equivalence of quasi-homogeneous systems of differential equations. (Russian) Zbl 0692.34040 Differ. Uravn. 25, No. 11, 2016-2017 (1989). Reviewer: V.Răsvan MSC: 34C20 34E10 PDFBibTeX XMLCite \textit{M. A. Ivanov}, Differ. Uravn. 25, No. 11, 2016--2017 (1989; Zbl 0692.34040)
Shubeh, A. S. Sufficient center conditions for a two-dimensional autonomous system with cubic right-hand side. (Russian) Zbl 0692.34028 Differ. Uravn. 25, No. 11, 2014-2016 (1989). Reviewer: V.Răsvan MSC: 34C05 PDFBibTeX XMLCite \textit{A. S. Shubeh}, Differ. Uravn. 25, No. 11, 2014--2016 (1989; Zbl 0692.34028)
Ponosov, A. V. On the theory of reducible Ito functional-differential equations. (Russian) Zbl 0689.60056 Differ. Uravn. 25, No. 11, 1915-1925 (1989). Reviewer: R.Manthey MSC: 60H10 60H25 PDFBibTeX XMLCite \textit{A. V. Ponosov}, Differ. Uravn. 25, No. 11, 1915--1925 (1989; Zbl 0689.60056)
Zabello, L. E.; Smorodin, V. S. On a connection between maximum principle and dynamic programming in systems with delay. (Russian) Zbl 0688.49020 Differ. Uravn. 25, No. 11, 2001-2002 (1989). MSC: 49K15 49L20 PDFBibTeX XMLCite \textit{L. E. Zabello} and \textit{V. S. Smorodin}, Differ. Uravn. 25, No. 11, 2001--2002 (1989; Zbl 0688.49020)