%0 Journal Article
%A V. I. Gromak
%A V. V. Tsegel'nik
%T Functional relations between solutions of equations of $P$-type
%J Differencialʹnye uravneniâ
%D 1994
%P 1118-1124
%V 30
%N 7
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1994_30_7_a2/
%G ru
%F DE_1994_30_7_a2