1. Alcaraz, F.C., Koberle, R.: Duality and the phases ofZ(N) spin systems. J. Phys. A13, L153 (1980)
2. Alcaraz, F.C., Koberle, R.: The phases of two-dimensional spin and four-dimensional gauge systems withZ(N) symmetry. J. Phys. A14, 1169 (1981)
3. Bricmont, J., Kuroda, K., Lebowitz, J.L.: First order phase transitions in lattice and continuous systems: extension of the Pirogov-Sinai theory. Commun. Math. Phys.101, 501 (1985)
4. Bricmont, J., Slawny, J.: First order phase transitions and perturbation theory. In: Statistical mechanics and field theory: mathematical aspects. Hugenholtz, N.M., Winnink, M. (eds.). Berlin, Heidelberg, New York: Springer 1986
5. Briemont, J., Slawny, J.: Phase transitions with a finite number of dominant ground states. To appear in J. Stat. Phys.