TY - JOUR AU - A. P. Buslaev TI - Some properties of the~spectrum of nonlinear equations of Sturm--Liouville type JO - Sbornik. Mathematics PY - 1995 SP - 1 EP - 14 VL - 80 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1995_80_1_a0/ LA - en ID - SM_1995_80_1_a0 ER -