%0 Journal Article
%A B. P. Tkach
%T Periodic solution of systems of partial differential equations of neutral type
%J Differencialʹnye uravneniâ
%D 1969
%P 735-748
%V 5
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1969_5_4_a12/
%G ru
%F DE_1969_5_4_a12