%0 Journal Article %A Yu. B. Rusak %T Problem of the points of bifurcation in the case of several parameters %J Differencialʹnye uravneniâ %D 1981 %P 383-386 %V 17 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1981_17_2_a20/ %G ru %F DE_1981_17_2_a20