1. On the degeneracies of quantum systems

   • J. S. Dowker

   OriginalPaper Pages: 319 - 320

2. A note on massless field equations for arbitrary spin

   • J. S. Dowker

   OriginalPaper Pages: 321 - 322

3. On a unified theory of electromagnetism and weak interaction

   • Pratul Bandyopadhyay

   OriginalPaper Pages: 323 - 330

4. On the behaviour of test matter in the vicinity of singularities

   • Horst-Heino V. Borzeszkowski

   OriginalPaper Pages: 331 - 335

5. A metric allowing a 2-parameter group of motion

   • Edgar Pechlaner

   OriginalPaper Pages: 337 - 339

6. On the quantum mechanical treatment of decaying non-relativistic systems

   • L. Lanz
   • L. A. Lugiato
   • G. Ramella

   OriginalPaper Pages: 341 - 352

7. The orthogonality postulate in axiomatic quantum mechanics

   • M. J. Maczyński

   OriginalPaper Pages: 353 - 360

8. Cramér-Rao inequalities for operator-valued measures in quantum mechanics

   • Carl W. Helstrom

   OriginalPaper Pages: 361 - 376

9. On the meaning ofE=mc ²

   • Mendel Sachs

   OriginalPaper Pages: 377 - 383

10. On the propagation of massless fields

    • H. U. Kranold

    OriginalPaper Pages: 385 - 389