%0 Journal Article
%A N. V. Grigorenko
%T Two problems in the Galois theory of differential fields for the field of formal power series
%J Sbornik. Mathematics
%D 1980
%P 327-335
%V 37
%N 3
%U http://geodesic.mathdoc.fr/item/SM_1980_37_3_a1/
%G en
%F SM_1980_37_3_a1