%0 Journal Article
%A Yu. V. Gavrilenko
%T Principal solutions and automorphism groups of systems of
%J Doklady Akademii Nauk
%D 1989
%P 524-528
%V 309
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1989_309_3_a1/
%G ru
%F DAN_1989_309_3_a1