Kroopnick, Allan Oscillation and boundedness theorems for \(y''+a(t)b(y)=0\). (English) Zbl 0259.34040 Bull. Lond. Math. Soc. 4, 321-322 (1972). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 34C10 Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations 34C15 Nonlinear oscillations and coupled oscillators for ordinary differential equations PDFBibTeX XMLCite \textit{A. Kroopnick}, Bull. Lond. Math. Soc. 4, 321--322 (1972; Zbl 0259.34040) Full Text: DOI