1. Some properties of viability problems depending on a parameter

   • Vladimir V. Goncharov

   OriginalPaper Pages: 1 - 19

2. Partial integrals and the first focal value in the problem of centre

   • Dumitru Cozma
   • Alexandru Şubă

   OriginalPaper Pages: 21 - 34

3. Existence and multiplicity results for periodic solutions of superquadratic hamiltonian systems where the potential changes sign

   • Mario Girardi
   • Michele Matzeu

   OriginalPaper Pages: 35 - 61

4. Eigenvalues of the Laplacian on symmetric regions

   • Antônio L. Pereira

   OriginalPaper Pages: 63 - 109

5. Large time behaviour of solutions of balance laws with periodic initial data

   • Carlo Sinestrari

   OriginalPaper Pages: 111 - 131