1. Editorial

   EditorialNotes Pages: 535 - 535

2. Luminosity profiles and contraction of radiating spheres

   • R. Aquilano
   • W. Barreto
   • L. A. Nuñez

   OriginalPaper Pages: 537 - 553

3. Kaluza-Klein theory and Machian cosmology

   • Paul S. Wesson
   • J. Ponce de Leon

   OriginalPaper Pages: 555 - 566

4. Fermat's principle in General Relativity

   • Ll. Bel
   • J. Martín

   OriginalPaper Pages: 567 - 585

5. Singularity theorems and the [General Relativity + additional matter fields] formulation of metric theories of gravitation

   • Haydeh Sirousse Zia

   OriginalPaper Pages: 587 - 597

6. Fluid dynamics in higher order gravity

   • R. Maartens
   • D. R. Taylor

   OriginalPaper Pages: 599 - 613

7. Torsion and massive electrodynamics in the early universe

   • C. Sivaram
   • L. C. Garcia de Andrade

   OriginalPaper Pages: 615 - 618

8. The physical meaning of Fermi coordinates

   • Karl-Peter Marzlin

   OriginalPaper Pages: 619 - 636