Contents:

• Gibbs States Describing Coexistence of Phases for a Three-Dimensional Ising Model (R L Dobrushin)
• The Phase Separation Line in the Two-Dimensional Ising Model (G Gallavotti)
• Phase Diagrams of Classical Lattice Systems (S A Pirogov & Ya G Sinai)
• An Alternative Version of Pirogov-Sinai Theory (M Zahradnik)
• Phase Transitions in Anisotropic Lattice Spin Systems (J Frohlich & E H Lieb)
• Existence of Phase Transitions for Quantum Lattice Systems (J Ginibre)
• The Phenomenon of "Phase Separation" at Low Temperature in Some Lattice Models of a Gas I (R A Minlos & Ja G Sinai)
• Some New Results on First Order Phase Transitions in Lattice Gas Models (R A Minlos & Ja G Sinai)
• and others