%0 Journal Article %A B. P. Tkach %T A partial differential equation with retarded argument %J Differencialʹnye uravneniâ %D 1967 %P 1796-1800 %V 3 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1967_3_10_a17/ %G ru %F DE_1967_3_10_a17