1. Zero value of the Schwarzschildian mass of asymptotically euclidian time-symmetrical gravitational waves

   • V. N. Folomeshkin

   OriginalPaper Pages: 145 - 151

2. A homomorphism theorem for the Poincaré group

   • D. K. Sen

   OriginalPaper Pages: 153 - 157

3. Compact topologies on Minkowski space

   • S. Nanda
   • H. K. Panda

   OriginalPaper Pages: 159 - 163

4. Preferred frames and oscillating universes

   • J. Katz

   OriginalPaper Pages: 165 - 173

5. Some remarks on the dynamical origin of charge and space-time quantisation

   • Pratul Bandyopadhyay

   OriginalPaper Pages: 175 - 178

6. Some zero rest mass test fields in general relativity

   • A. Held
   • B. H. Voorhees

   OriginalPaper Pages: 179 - 187

7. Another form of Einstein's addition law of velocities

   • P. Kaliappan

   OriginalPaper Pages: 189 - 196

8. Internal geometrical structures on Minkowski space-time and Yang-Mills symmetries

   • M. Camenzind

   OriginalPaper Pages: 197 - 216