%0 Journal Article %A Michael Starbird %T The Borsuk homotopy extension theorem without the binormality condition %J Fundamenta Mathematicae %D 1975 %P 207-211 %V 87 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-87-3-207-211/ %R 10.4064/fm-87-3-207-211 %G en %F 10_4064_fm_87_3_207_211