%0 Journal Article
%A Lidia Zaręba
%T On students’ difficulties in changing their original procedure on the example of a task concerning differential comparison
%J Didactica Mathematicae
%D 2018
%P  97-129
%V 40
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/dm.v40i0.6455/
%R 10.14708/dm.v40i0.6455
%G pl
%F 10_14708_dm_v40i0_6455