TY - JOUR AU - M. Nurubloev TI - Boundary problems for a system of second-order equations of composite type JO - Differencialʹnye uravneniâ PY - 1982 SP - 347 EP - 349 VL - 18 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1982_18_2_a21/ LA - ru ID - DE_1982_18_2_a21 ER -