TY  - JOUR
AU  - S. Walcher
TI  - Multi-Parameter Symmetries of First Order Ordinary Differential Equations
JO  - Journal of Lie Theory
PY  - 1999
SP  - 249
EP  - 269
VL  - 9
IS  - 1
UR  - https://jolt.centre-mersenne.org/articles/10.5802/jolt.169/
DO  - 10.5802/jolt.169
ID  - JOLT_1999_9_1_a10
ER  -