1. Lebowitz, J.L.: Coexistence of phases in ising ferromagnets. I.H.E.S. Preprint. Bures-sur-Yvette, France 1976
2. Ginibre, J.: Commun. math. Phys.16, 310 (1970)
3. Ruelle, D.: Statistical mechanics. New York: Benjamin 1969
4. Lanford III, O. E.: In: Statistical mechanics and mathematical problems (ed. A. Lenard). Berlin-Heidelberg-New York: Springer 1973
5. Bricmont, J., Fontaine, J.R., Landau, L.J.: On the uniqueness of the equilibrium state in plane rotators. U.C.L.-I.P.T. Preprint. Louvain-la-Neuve, Belgium 1977