%0 Journal Article %A L. È. Èl'sgol'ts %T On the integration of linear partial differential equations with retarded argument %J Uchenye Zapiski Moskovskogo Gosudarstvennogo Universiteta %D 1956 %P 57-58 %V 181 %N 181 %U http://geodesic.mathdoc.fr/item/UZMU_1956_181_181_a3/ %G ru %F UZMU_1956_181_181_a3