TY - JOUR AU - Yu. M. Rappoport TI - A modification of the approximation method JO - Differencialʹnye uravneniâ PY - 1983 SP - 1809 EP - 1813 VL - 19 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1983_19_10_a24/ LA - ru ID - DE_1983_19_10_a24 ER -