Golichev, I. I. Existence of a point of regularity for and the spectrum of a self-adjoint second-order differential operator. (Russian) Zbl 0232.47049 Differ. Uravn. 7, 2051-2057 (1971). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 47F05 General theory of partial differential operators (should also be assigned at least one other classification number in Section 47-XX) 47A10 Spectrum, resolvent PDF BibTeX XML Cite \textit{I. I. Golichev}, Differ. Uravn. 7, 2051--2057 (1971; Zbl 0232.47049)