Lomovtsev, F. E. Die Lösbarkeit von Randwertproblemen für gewisse Differential- Operatorgleichungen gerader Ordnung. (Russian) Zbl 0448.34064 Differ. Uravn. 16, 1581-1586 (1980). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 Reviews MSC: 34G10 Linear differential equations in abstract spaces 47A50 Equations and inequalities involving linear operators, with vector unknowns 34B05 Linear boundary value problems for ordinary differential equations 34B99 Boundary value problems for ordinary differential equations Keywords:Hilbert space; linear selfadjoint, positive definite operator PDF BibTeX XML Cite \textit{F. E. Lomovtsev}, Differ. Uravn. 16, 1581--1586 (1980; Zbl 0448.34064)