1. Small-amplitude limit cycles in polynomial Liénard systems

   • Colin J. Christopher
   • Noel G. Lloyd

   OriginalPaper Pages: 183 - 190

2. Nonlinear systems with unbounded controls and state constraints: a problem of proper extension

   • Monica Motta
   • Franco Rampazzo

   OriginalPaper Pages: 191 - 216

3. Characteristic shocks of crossing velocities in magnetohydrodynamics

   • Guy Boiliat
   • Augusto Muracchini

   OriginalPaper Pages: 217 - 230

4. Harnack inequality for minimizers of integral functionals with general growth conditions

   • Elvira Mascolo
   • Gloria Papi

   OriginalPaper Pages: 231 - 244

5. Critical point theorems and applications to a semilinear elliptic problem

   • E. Alves de Barros e Silva

   OriginalPaper Pages: 245 - 260

6. Regularity of invariant measures for a class of perturbed Ornstein-Uhlenbeck operators

   • Vladimir I. Bogachev
   • Giuseppe Da Prato
   • Michael Röckner

   OriginalPaper Pages: 261 - 268