%0 Journal Article %A D. G. Martirosyan %T On the question of an upper bound of the number of periodic Gibbs states for a~lattice model of a~gas %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1975 %V 30 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1975_30_6_a19/ %G ru %F RM_1975_30_6_a19