TY - JOUR AU - V. A. Morozov TI - An optimality principle for the error when solving approximately equations with non-linear operators JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 1974 SP - 819 EP - 827 VL - 14 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_1974_14_4_a0/ LA - ru ID - ZVMMF_1974_14_4_a0 ER -