TY - JOUR AU - S. A. Pirogov TI - Gibbs random fields, and the problem of the coexistence of phases for lattice models of statistical physics JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1975 VL - 30 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1975_30_2_a17/ LA - ru ID - RM_1975_30_2_a17 ER -