TY - JOUR AU - M. V. Karasev TI - The asymptotic spectrum and oscillation front for operators with nonlinear commutation relations JO - Doklady Akademii Nauk PY - 1978 SP - 15 EP - 18 VL - 243 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1978_243_1_a1/ LA - ru ID - DAN_1978_243_1_a1 ER -