%0 Journal Article
%A K. Sieklucki
%T An inductive proof of the non-retractibility of a cell onto its boundary
%J Commentationes Mathematicae
%D 1983
%P  129-131
%V 23
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/cm.v23i1.6047/
%R 10.14708/cm.v23i1.6047
%G pl
%F 10_14708_cm_v23i1_6047