1. Retrodiction in quantum mechanics, preferred Lorentz frames, and nonlocal measurements

   • O. Cohen
   • B. J. Hiley

   OriginalPaper Pages: 1669 - 1698

2. Phi-symmetric effect algebras

   • M. K. Bennett
   • D. J. Foulis

   OriginalPaper Pages: 1699 - 1722

3. Soliton model of atom

   • Yu. P. Rybakov
   • B. Saha

   OriginalPaper Pages: 1723 - 1731

4. Statistical mechanics analysis of the “twins paradox”

   • Uri Ben-Ya'acov

   OriginalPaper Pages: 1733 - 1740

5. An Einstein addition law for nonparallel boosts using the geometric algebra of space-time

   • B. Tom King

   OriginalPaper Pages: 1741 - 1755

6. Empirical relations between noncommuting observables

   • Giuseppe NisticÒ

   OriginalPaper Pages: 1757 - 1767

7. Geometro-differential conception of extended particles and their quantum theory in de Sitter space

   • A. Smida
   • M. Hachemane
   • M. Fellah

   OriginalPaper Pages: 1769 - 1795

8. Book review

   • F. Coester

   BookReview Pages: 1797 - 1798

9. Book review

   • Uwe J. Hansen

   BookReview Pages: 1799 - 1800