1. Kaluza, Klein, confinement, and nuclear forces

   • M. W. Kalinowski

   OriginalPaper Pages: 327 - 345

2. ISO(3, 1) gauge theory of gravity

   • Shao Changgui
   • Xu Bangqing

   OriginalPaper Pages: 347 - 353

3. Spin(8) gauge field theory

   • Frank D. (Tony) Smith Jr.

   OriginalPaper Pages: 355 - 403

4. Physical structure of the energy-momentum tensor in General Relativity

   • G. S. Hall
   • D. A. Negm

   OriginalPaper Pages: 405 - 423

5. New approach to Einstein-Petrov type I spaces. II. A classification scheme

   • S. B. Edgar

   OriginalPaper Pages: 425 - 433

6. What is an elementary physical object? A system-theoretic approach

   • L. Szabó

   OriginalPaper Pages: 435 - 439

7. Hyperspin manifolds

   • David Finkelstein
   • Shlomit Ritz Finkelstein
   • Christian Holm

   OriginalPaper Pages: 441 - 463