Mkrtumyan, R. R. A special linear second order equation. (Russian. English summary) Zbl 0563.34004 Dokl. Akad. Nauk BSSR 29, 213-215 (1985). MSC: 34A25 34A30 PDF BibTeX XML Cite \textit{R. R. Mkrtumyan}, Dokl. Akad. Nauk BSSR 29, 213--215 (1985; Zbl 0563.34004)
Mkrtumyan, R. R. Linear differential equations of second order with rational solutions. (Russian) Zbl 0518.34011 Differ. Uravn. 18, 713-716 (1982). MSC: 34A30 34A05 PDF BibTeX XML Cite \textit{R. R. Mkrtumyan}, Differ. Uravn. 18, 713--716 (1982; Zbl 0518.34011)
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. On a linear equation of fourth order. (Russian) Zbl 0418.34001 Differ. Uravn. 15, 740-742 (1979). MSC: 34A05 34C20 34A30 PDF BibTeX XML Cite \textit{R. R. Mkrtumyan}, Differ. Uravn. 15, 740--742 (1979; Zbl 0418.34001)
Mkrtumyan, R. R. Über einen Fall der Integrierbarkeit einer linearen Gleichung zweiter Ordnung. (Russian) Zbl 0417.34005 Differ. Uravn. 15, 555-559 (1979). MSC: 34A05 34A30 PDF BibTeX XML Cite \textit{R. R. Mkrtumyan}, Differ. Uravn. 15, 555--559 (1979; Zbl 0417.34005)
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)
Mkrtumjan, R. R. On a linear third order differential equation. (Russian) Zbl 0395.34012 Differ. Uravn. 14, 551-553 (1978). MSC: 34A30 47E05 PDF BibTeX XML Cite \textit{R. R. Mkrtumjan}, Differ. Uravn. 14, 551--553 (1978; Zbl 0395.34012)