%0 Journal Article
%A A. D. Avdeev
%T Second order matrix differential equations
%J Differencialʹnye uravneniâ
%D 1977
%P 579-591
%V 13
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1977_13_4_a0/
%G ru
%F DE_1977_13_4_a0