%0 Journal Article %A N. T. Stel'maschuk %T Solution of some systems of partial differential equations %J Differencialʹnye uravneniâ %D 1977 %P 1426-1433 %V 13 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1977_13_8_a8/ %G ru %F DE_1977_13_8_a8