TY - JOUR AU - V. D. Kupradze TI - On the approximate solution of problems in mathematical physics JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1967 SP - 58 EP - 108 VL - 22 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1967_22_2_a2/ LA - en ID - RM_1967_22_2_a2 ER -