%0 Journal Article
%A Jacek Dymel
%T A commentary to Szurek's article
%J Didactica Mathematicae
%D 2019
%P  167 -171
%V 41
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/dm.v41i0.7032/
%R 10.14708/dm.v41i0.7032
%G pl
%F 10_14708_dm_v41i0_7032