%0 Journal Article %A S. V. Anosova %A P. Ya. Grushko %T Group properties of the differential equation $a(x)y'+b(x)y=0$ %J Differencialʹnye uravneniâ %D 1980 %P 750-752 %V 16 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1980_16_4_a17/ %G ru %F DE_1980_16_4_a17