%0 Journal Article %A V. P. Nozdracheva %T Bifurcations of a singular cone in two cases %J Differencialʹnye uravneniâ %D 1991 %P 1984-1986 %V 27 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1991_27_11_a17/ %G ru %F DE_1991_27_11_a17