%0 Journal Article
%A Marianna Ciosek
%A Maciej Klakla
%T CIEAEM 53
%J Didactica Mathematicae
%D 2001
%P  172-183
%V 23
%N 01
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/dm.v23i01.6716/
%R 10.14708/dm.v23i01.6716
%G pl
%F 10_14708_dm_v23i01_6716