1. Coupling constant thresholds in nonrelativistic quantum mechanics

   • M. Klaus
   • B. Simon

   OriginalPaper Pages: 153 - 168

2. Mass spectrum of the two dimensional λφ⁴−1/4φ²−μφ quantum field model

   • John Z. Imbrie

   OriginalPaper Pages: 169 - 200

3. Sur le spectre des opérateurs aux différences finies aléatoires

   • Hervé Kunz
   • Bernard Souillard

   OriginalPaper Pages: 201 - 246

4. Markov Partitions for dispersed billiards

   • L. A. Bunimovich
   • Ya. G. Sinai

   OriginalPaper Pages: 247 - 280

5. Lattice systems with a continuous symmetry

   • Jean Bricmont
   • Jean-Raymond Fontaine
   • Thomas Spencer

   OriginalPaper Pages: 281 - 302

6. Equilibrium states for a plane incompressible perfect fluid

   • Carlo Boldrighini
   • Sandro Frigio

   Erratum Pages: 303 - 303