%0 Journal Article
%A Karol Borsuk
%T On fundamental deformation retracts and on some related notions
%J Fundamenta Mathematicae
%D 1974
%P 261-270
%V 86
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-86-3-261-270/
%R 10.4064/fm-86-3-261-270
%G en
%F 10_4064_fm_86_3_261_270