1. Bifurcations from an invariant circle for two-parameter families of maps of the plane: A computer-assisted study

   • D. G. Aronson
   • M. A. Chory
   • R. P. McGehee

   OriginalPaper Pages: 303 - 354

2. Classical and quantum-mechanical systems of Toda lattice type. I

   • Roe Goodman
   • Nolan R. Wallach

   OriginalPaper Pages: 355 - 386

3. On the massive sine-Gordon equation in the first few regions of collapse

   • G. Benfatto
   • G. Gallavotti
   • F. Nicolò

   OriginalPaper Pages: 387 - 410

4. Massless phases and symmetry restoration in abelian gauge theories and spin systems

   • Jürg Fröhlich
   • Thomas Spencer

   OriginalPaper Pages: 411 - 454