TY - JOUR AU - V. R. Portnov TI - On the existence of bounded Galerkin nets for nonlinear operators JO - Doklady Akademii Nauk PY - 1975 SP - 1267 EP - 1270 VL - 225 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1975_225_6_a7/ LA - ru ID - DAN_1975_225_6_a7 ER -