%0 Journal Article
%A Jelena Katić
%T Substitutions in differential equations as a geometry of their symmetries
%J The Teaching of Mathematics
%D 2018
%P 1 
%V XXI
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TM2_2018_XXI_1_a0/
%G en
%F TM2_2018_XXI_1_a0