TY - JOUR AU - I. I. Ol'khovskii TI - The first approximation of the “temperature” expansion of the Bogoljubov “chain” JO - Doklady Akademii Nauk PY - 1975 SP - 1063 EP - 1065 VL - 221 IS - 5 UR - http://geodesic.mathdoc.fr/item/DAN_1975_221_5_a15/ LA - ru ID - DAN_1975_221_5_a15 ER -