TY - JOUR AU - M. M. Sirazhudinov TI - $G$-convergence and averaging of some higher-order nondivergence elliptic operators JO - Differencialʹnye uravneniâ PY - 1983 SP - 1949 EP - 1956 VL - 19 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1983_19_11_a16/ LA - ru ID - DE_1983_19_11_a16 ER -