Edmunds, D. E.; Williams, Valerie Hyperbolic differential inequalities. (English) Zbl 0158.11501 J. Lond. Math. Soc. 42, 687-697 (1967). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 Documents Keywords:partial differential equations PDFBibTeX XMLCite \textit{D. E. Edmunds} and \textit{V. Williams}, J. Lond. Math. Soc. 42, 687--697 (1967; Zbl 0158.11501) Full Text: DOI