TY - JOUR AU - L. N. Dovbysh TI - Stability of Ritz's method for problems in the spectral theory of operators JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1965 SP - 78 EP - 92 VL - 84 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1965_84_a6/ LA - ru ID - TM_1965_84_a6 ER -