%0 Journal Article %A Kiiti Morita %T On generalizations of Borsuk's homotopy extension theorem %J Fundamenta Mathematicae %D 1975 %P 1-6 %V 88 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-88-1-1-6/ %R 10.4064/fm-88-1-1-6 %G en %F 10_4064_fm_88_1_1_6