TY - JOUR AU - D. K. Potapov TI - Estimations of a Differential Operator in Spectral Parameter Problems for Elliptic Equations with Discontinuous Nonlinearities JO - Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences PY - 2010 SP - 268 EP - 271 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VSGTU_2010_5_a30/ LA - ru ID - VSGTU_2010_5_a30 ER -