%0 Journal Article %A B. V. Loginov %A V. A. Trenogin %T The use of group invariance in branching theory %J Differencialʹnye uravneniâ %D 1975 %P 1518-1521 %V 11 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1975_11_8_a21/ %G ru %F DE_1975_11_8_a21