TY - JOUR AU - V. V. Kucherenko AU - V. P. Maslov TI - On the spectrum of normal forms of quadratic Bose operators JO - Doklady Akademii Nauk PY - 1997 SP - 18 EP - 20 VL - 354 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1997_354_1_a3/ LA - ru ID - DAN_1997_354_1_a3 ER -