Mather, Michael Pull-backs in homotopy theory. (English) Zbl 0351.55005 Can. J. Math. 28, 225-263 (1976). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 13 ReviewsCited in 77 Documents MathOverflow Questions: Homotopy pullback of a homotopy pushout is a homotopy pushout MSC: 55P05 Homotopy extension properties, cofibrations in algebraic topology 55R05 Fiber spaces in algebraic topology PDF BibTeX XML Cite \textit{M. Mather}, Can. J. Math. 28, 225--263 (1976; Zbl 0351.55005) Full Text: DOI OpenURL