Everitt, W. N.; Giertz, M. On some properties of the powers of a formally self-adjoint differential expression. (English) Zbl 0243.34046 Proc. Lond. Math. Soc., III. Ser. 24, 149-170 (1972). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 34 Documents MSC: 34C05 Topological structure of integral curves, singular points, limit cycles of ordinary differential equations 47E05 General theory of ordinary differential operators PDF BibTeX XML Cite \textit{W. N. Everitt} and \textit{M. Giertz}, Proc. Lond. Math. Soc. (3) 24, 149--170 (1972; Zbl 0243.34046) Full Text: DOI OpenURL