1. The Bargmann-Wigner method in Galilean relativity

   • C. R. Hagen

   OriginalPaper Pages: 97 - 108

2. On the scattering operator for quantum fields

   • Raphael Höegh-Krohn

   OriginalPaper Pages: 109 - 126

3. Superstable interactions in classical statistical mechanics

   • D. Ruelle

   OriginalPaper Pages: 127 - 159

4. Entropy inequalities

   • Huzihiro Araki
   • Elliott H. Lieb

   OriginalPaper Pages: 160 - 170

5. Constraints on the derivatives of the π π scattering amplitude from positivity

   • A. K. Common
   • F. J. Yndurain

   OriginalPaper Pages: 171 - 178