Singh, Bhagat A necessary and sufficient condition for the oscillation of an even order nonlinear delay differential equation. (English) Zbl 0273.34047 Can. J. Math. 25, 1078-1089 (1973). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 10 Documents MSC: 34C10 Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations 34K05 General theory of functional-differential equations PDF BibTeX XML Cite \textit{B. Singh}, Can. J. Math. 25, 1078--1089 (1973; Zbl 0273.34047) Full Text: DOI OpenURL