1. Minlos, R.A., Sinai, Ya.G.: Tr. Mosk. Math. Obshch.19, (1968), in Russian
2. Pirogov, S.A., Sinai, Ya.G.: Teor. Mat. Fiz.25, 358–369 (1975), in Russian, English translation: Phase diagrams of classical lattice systems. Theor. Math. Phys.25, 1185–1192 (1975); and Teor. Mat. Fiz.26, 61–76 (1976), in Russian; English translation: Phase diagrams of classical lattice systems. Continuation. Theor. Math. Phys.26, 39–49 (1976)
3. Sinai, Ya.G.: Theory of phase transitions: rigorous results. Oxford, New York: Pergamon Press, 1982
4. Martirosian, D.G.: The problem of an upper estimate of the number of periodic Gibbs states for the model of a latticed gas. Usp. Mat. Nauk30, 181 (1975)
5. Malyshev, V.A.: Usp. Mat. Nauk35, 212 (1980), in Russian; English translation: Cluster expansions in lattice models of statistical physics and the quantum theory of fields. Russ. Math. Surv.35, 1–62 (1980)