1. On the question of the existence of a canonically defined distance function for metrics with indefinite signature on a given manifold

   • Elmar Eder

   Research Articles Pages: 775 - 789

2. Algebraic isometric embeddings of charged spherically symmetric space-times

   • Marco Ferraris
   • Mauro Francaviglia

   Research Articles Pages: 791 - 804

3. Exact spatially homogeneous cosmologies

   • C. B. Collins
   • E. N. Glass
   • D. A. Wilkinson

   Research Articles Pages: 805 - 823

4. Two theorems on flat space-time gravitational theories

   • Mario Castagnino
   • Luis Chimento

   Research Articles Pages: 825 - 835

5. The internal state of a gas of particles with spin

   • Y. Feldman
   • G. E. Tauber

   Research Articles Pages: 837 - 856

6. A new unified field theory based on the conformal group

   • Eliano Pessa

   Research Articles Pages: 857 - 862

7. General solutions for a static isotropic metric in the Brans-Dicke gravitational theory

   • N. Van Den Bergh

   Research Articles Pages: 863 - 869