TY  - JOUR
AU  - Julia Hartmann
TI  - Invariants and differential Galois groups in degree four
JO  - Banach Center Publications
PY  - 2002
SP  - 79
VL  - 58
IS  - 1
PB  - mathdoc
UR  - https://geodesic-test.mathdoc.fr/item/BCP_2002__58_1_282214/
LA  - en
ID  - BCP_2002__58_1_282214
ER  -