TY - JOUR AU - A. K. Boyarchuk TI - ``Co-stability'' of conservative difference schemes for a differential equation and a system of differential equations of the fourth order with discontinuous coefficients JO - Differencialʹnye uravneniâ PY - 1965 SP - 1652 EP - 1661 VL - 1 IS - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1965_1_12_a12/ LA - ru ID - DE_1965_1_12_a12 ER -