%0 Journal Article
%A È. I. Grudo
%T On the structure of the solutions of a periodic Pfaffian system with two purely imaginary roots in the characteristic equation
%J Differencialʹnye uravneniâ
%D 1989
%P 1867-1872
%V 25
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_11_a5/
%G ru
%F DE_1989_25_11_a5