Levinson, Norman A second order differential equation with singular solutions. (English) Zbl 0045.36501 Ann. Math. (2) 50, 127-153 (1949). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 21 Documents Keywords:ordinary differential equations PDF BibTeX XML Cite \textit{N. Levinson}, Ann. Math. (2) 50, 127--153 (1949; Zbl 0045.36501) Full Text: DOI OpenURL