%0 Journal Article
%A P. B. Gusyatnikov
%A E. S. Polovinkin
%T On two types of operators for biparametric equations
%J Doklady Akademii Nauk
%D 1980
%P 20-24
%V 254
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1980_254_1_a3/
%G ru
%F DAN_1980_254_1_a3