Quantum Affine Symmetry and Correlation Functions of the XXZ Model T. Miwa. A ThreeDimensional Solvable Model V.V. Bazhanov, R.J. Baxter. Elliptic Parametrization of the Three-State Chiral Potts Model R.J. Baxter. An Introduction to Yangian Symmetries D. Bernard. On the Quantum-Group Description of the Massive Thirring (Sine-Gordon) Model C. Destri. The Operator Algebra of the Discrete State Operators in 2D Gravity with Nonvanishing Cosmological Constant Vl.S. Dotsenko. Hidden Geometrical Structures in Integrable Models P. Dorey. Hidden Geometrical Structures in Integrable Models P. Dorey. Picard-Fuchs Equations and Low Energy Couplings in Superstring Theories R.D'Auria, S. Ferrara. On the Structure of Rational Field Theory D. Gepner. Non-Perturbative Computability Vs. Integrability in Susy QFT's S. Cecotti. Quantum Integrability and Exact S-Matrices for Affine Toda Theories D. Zanon. 10 additional articles. Index.