TY - JOUR AU - S. V. Tyablikov AU - V. A. Moskalenko TI - The method of quantum Green functions in the theory of optical bands in crystals JO - Doklady Akademii Nauk PY - 1961 SP - 851 EP - 854 VL - 139 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1961_139_4_a21/ LA - ru ID - DAN_1961_139_4_a21 ER -