%0 Journal Article %A Ya. Sh. Il'yasov %T Non-local investigation of bifurcations of solutions of non-linear elliptic equations %J Izvestiya. Mathematics %D 2002 %P 1103-1130 %V 66 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_2002_66_6_a1/ %G en %F IM2_2002_66_6_a1