TY - JOUR AU - D. V. Valovik TI - The spectral properties of some nonlinear operators of Sturm-Liouville type JO - Sbornik. Mathematics PY - 2017 SP - 1282 EP - 1297 VL - 208 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2017_208_9_a1/ LA - en ID - SM_2017_208_9_a1 ER -