1. Collisionless periodic solutions to some three-body problems

   • Enrico Serra
   • Susanna Terracini

   OriginalPaper Pages: 305 - 325

2. A simple variational approach to a converse of the Lagrange-Dirichlet theorem

   • Peter Hagedorn
   • Jean Mawhin

   OriginalPaper Pages: 327 - 335

3. On action-angle variables

   • Larry Bates
   • Jedrzej Śniatycki

   OriginalPaper Pages: 337 - 343

4. A multiple-layer potential theory alternative to Agmon's

   • Alberto Cialdea

   OriginalPaper Pages: 345 - 362

5. Quasilinear elliptic boundary-value problems on unbounded cylinders and a related mountain-pass lemma

   • Ian Schindler

   OriginalPaper Pages: 363 - 374

6. On the existence of multiple, single-peaked solutions for a semilinear Neumann problem

   • Zhi-Qiang Wang

   OriginalPaper Pages: 375 - 399