TY  - JOUR
AU  - N.M. Katz
TI  - On the calculation of some differential galois groups.
JO  - Inventiones mathematicae
PY  - 1987
SP  - 13
EP  - 62
VL  - 87
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1987__87_143412/
ID  - IM_1987__87_143412
ER  -