Mkrtumyan, R. R.; Shikova, R. N. The meromorphic property of solutions of certain classes of linear differential equations. (English) Zbl 0437.34003 Differ. Equations 15, 1627-1630 (1980). MSC: 34M05 34A30 PDF BibTeX XML Cite \textit{R. R. Mkrtumyan} and \textit{R. N. Shikova}, Differ. Equations 15, 1627--1630 (1980; Zbl 0437.34003)
Mkrtumyan, R. R. A situation in which a linear second-order equation is integrable in quadratures. (English) Zbl 0436.34003 Differ. Equations 15, 389-393 (1979). MSC: 34A05 34A30 PDF BibTeX XML Cite \textit{R. R. Mkrtumyan}, Differ. Equations 15, 389--393 (1979; Zbl 0436.34003)
Mkrtumyan, R. R. A fourth-order linear equation. (English) Zbl 0435.34003 Differ. Equations 15, 520-522 (1979). MSC: 34A05 34A30 34C20 PDF BibTeX XML Cite \textit{R. R. Mkrtumyan}, Differ. Equations 15, 520--522 (1979; Zbl 0435.34003)
Mkrtumyan, R. R. A third-order linear differential equation. (English) Zbl 0409.34012 Differ. Equations 14, 390-391 (1978). MSC: 34A30 47E05 PDF BibTeX XML Cite \textit{R. R. Mkrtumyan}, Differ. Equations 14, 390--391 (1978; Zbl 0409.34012)