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 91 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 × Cite Format Result Cite Review PDF Full Text: DOI