TY - JOUR AU - D. G. Martirosyan TI - On the question of an upper bound of the number of periodic Gibbs states for a~lattice model of a~gas JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1975 VL - 30 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1975_30_6_a19/ LA - ru ID - RM_1975_30_6_a19 ER -