Il’kiv, Volodymyr; Magerovs’ka, Tetyana Nonlocal multi-point problem for higher order strong hyperbolic equation. (Ukrainian. English summary) Zbl 1199.35215 Mat. Visn. Nauk. Tov. Im. Shevchenka 4, 107-115 (2007). MSC: 35L56 35B10 PDFBibTeX XMLCite \textit{V. Il'kiv} and \textit{T. Magerovs'ka}, Mat. Visn. Nauk. Tov. Im. Shevchenka 4, 107--115 (2007; Zbl 1199.35215)
Il’kiv, Volodymyr; Magerovska, Tetyana Nonlocal two-point problem for second order strong hyperbolic equation with variable coefficients. (Ukrainian. English summary) Zbl 1142.35496 Mat. Visn. Nauk. Tov. Im. Shevchenka 3, 69-83 (2006). MSC: 35L20 35B10 PDFBibTeX XMLCite \textit{V. Il'kiv} and \textit{T. Magerovska}, Mat. Visn. Nauk. Tov. Im. Shevchenka 3, 69--83 (2006; Zbl 1142.35496)
Il’kiv, Volodymyr Multipoint nonlocal boundary value problem for a system of nonhomogeneous partial differential equations with time variable continuous coefficients. (Ukrainian. English summary) Zbl 1142.35367 Mat. Visn. Nauk. Tov. Im. Shevchenka 1, 47-58 (2004). MSC: 35G15 PDFBibTeX XMLCite \textit{V. Il'kiv}, Mat. Visn. Nauk. Tov. Im. Shevchenka 1, 47--58 (2004; Zbl 1142.35367)