TY - JOUR AU - N. S. Bakhvalov TI - On optimal methods of specifying information during the solution of differential equations JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 1962 SP - 569 EP - 592 VL - 2 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_1962_2_4_a4/ LA - ru ID - ZVMMF_1962_2_4_a4 ER -