TY - JOUR AU - I. Z. Shtokalo TI - An important contribution to the development of differential equations and their application JO - Differencialʹnye uravneniâ PY - 1978 SP - 2123 EP - 2130 VL - 14 IS - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1978_14_12_a1/ LA - ru ID - DE_1978_14_12_a1 ER -