TY - JOUR AU - O. V. Derzhko TI - The theory of equilibrium properties of a system of atoms, some of which are excited JO - Doklady Akademii Nauk PY - 1988 SP - 1361 EP - 1365 VL - 303 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1988_303_6_a19/ LA - ru ID - DAN_1988_303_6_a19 ER -