TY  - JOUR
AU  - Walcher, Sebastian
TI  - Multi-parameter symmetries of first order ordinary differential equations.
JO  - Journal of Lie Theory
PY  - 1999
SP  - 249
VL  - 9
IS  - 1
PB  - mathdoc
UR  - https://geodesic-test.mathdoc.fr/item/JLT_1999__9_1_226853/
LA  - en
ID  - JLT_1999__9_1_226853
ER  -