TY  - JOUR
AU  - Jelena Katić
TI  - Substitutions in differential equations as a geometry of their symmetries
JO  - The Teaching of Mathematics
PY  - 2018
SP  - 1 
VL  - XXI
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TM2_2018_XXI_1_a0/
LA  - en
ID  - TM2_2018_XXI_1_a0
ER  -