%0 Journal Article %A S. B. Penchansky %T On functionally invariant solutions of a system of partial differential equations %J Differencialʹnye uravneniâ %D 1985 %P 1449-1450 %V 21 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1985_21_8_a23/ %G ru %F DE_1985_21_8_a23