%0 Journal Article
%A N.M. Katz
%T On the calculation of some differential galois groups.
%J Inventiones mathematicae
%D 1987
%P 13-62
%V 87
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM_1987__87_143412/
%F IM_1987__87_143412