%0 Journal Article %A V. K. Saul'ev %T Asymptotically bilateral methods of solution of partial differential equations %J Differencialʹnye uravneniâ %D 1972 %P 362-371 %V 8 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1972_8_2_a16/ %G ru %F DE_1972_8_2_a16