%0 Journal Article
%A M. M. Khapaev
%A I. V. Kuznetsova
%T Multifrequency systems that have lag
%J Differencialʹnye uravneniâ
%D 1982
%P 354-356
%V 18
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1982_18_2_a24/
%G ru
%F DE_1982_18_2_a24