TY - JOUR AU - K. Kh. Boimatov TI - Matrix differential operators generated by noncoercive bilinear JO - Doklady Akademii Nauk PY - 1994 SP - 5 EP - 10 VL - 339 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1994_339_1_a0/ LA - ru ID - DAN_1994_339_1_a0 ER -