%0 Journal Article
%A Karol Borsuk
%T Fundamental retracts and extensions of fundamental sequences
%J Fundamenta Mathematicae
%D 1969
%P 55-85
%V 64
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-64-1-55-85/
%R 10.4064/fm-64-1-55-85
%G en
%F 10_4064_fm_64_1_55_85