Naĭmark, M. A. Linear differential operators. 3rd ed. (Линейные дифференциальные операторы.) (Russian) Zbl 1221.47085 Klassika i Sovremennost’. Moscow: Fizmatlit (ISBN 978-5-9221-1259-8). 528 p. (2010). See the reviews of the English translation, Part I (1967; Zbl 0219.34001), Part II (1968; Zbl 0227.34020) and the German translation (1960; Zbl 0092.07902). For the review of the Russian original (1954), see Zbl 0057.07102. Cited in 3 Documents MSC: 47E05 General theory of ordinary differential operators (should also be assigned at least one other classification number in Section 47-XX) PDF BibTeX XML Cite \textit{M. A. Naĭmark}, Линейные дифференциальные операторы (Russian). 3rd ed. Moscow: Fizmatlit (2010; Zbl 1221.47085)