1. Space-time operators and the incompatibility of quantum mechanics with both finite-dimensional spinor fields and Lagrangian dynamics in the context of special relativity

   • Robert Alan Coleman

   OriginalPaper Pages: 83 - 141

2. Unified field theory with homotopic charge

   • Daniel M. Pisello

   OriginalPaper Pages: 143 - 147

3. Remark on the equations δR ²/δg _ij = 0

   • H. A. Buchdahl

   OriginalPaper Pages: 149 - 151

4. Relativistic fluids in spherically symmetric space

   • Dipankar Ray

   OriginalPaper Pages: 153 - 162