Naked singularities in a self-similar Tolman-Bondi spacetime A. SilS. Chatterjee OriginalPaper Pages: 775 - 786
Vacuum spacetimes with a two-dimensional orthogonally transitive group of homothetic motions Charalampos Kolassis OriginalPaper Pages: 787 - 804
Perfect fluid space-times with a two-dimensional orthogonally transitive group of homothetic motions Ch. KolassisJ. B. Griffiths OriginalPaper Pages: 805 - 832
Euclidean action, nucleation energy and the dimensionality of space-time Franz Embacher OriginalPaper Pages: 833 - 841
On a Fermat principle in general relativity. A Morse theory for light rays Fabio GiannoniAntonio Masiello OriginalPaper Pages: 855 - 897