1. Nonlinear de Sitter symmetry and restricted space-time regions in gravity and supergravity

   • N. S. Baaklini

   Research Articles Pages: 365 - 376

2. The center of mass in general relativity

   • R. Schattner

   Research Articles Pages: 377 - 393

3. The uniqueness of the center of mass in general relativity

   • R. Schattner

   Research Articles Pages: 395 - 399

4. The equation of motion and gravitational radiation of an ideal fluid sphere moving in a gravitational background

   • G. Lessner

   Research Articles Pages: 401 - 430

5. Projection tensor hydrodynamics: Generalized perfect fluids

   • Robert H. Gowdy

   Research Articles Pages: 431 - 443

6. “Projective relativity” and magnetohydrodynamics

   • Giuseppe Arcidiacono

   Research Articles Pages: 445 - 454