%0 Journal Article %A A. P. Buslaev %T Some properties of the~spectrum of nonlinear equations of Sturm--Liouville type %J Sbornik. Mathematics %D 1995 %P 1-14 %V 80 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1995_80_1_a0/ %G en %F SM_1995_80_1_a0