Olum, Paul Mappings of manifolds and the notion of degree. (English) Zbl 0052.19901 Ann. Math. (2) 58, 458-480 (1953). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 ReviewsCited in 66 Documents Keywords:topology PDFBibTeX XMLCite \textit{P. Olum}, Ann. Math. (2) 58, 458--480 (1953; Zbl 0052.19901) Full Text: DOI