1. Twistor connection and normal conformal Cartan connection

   • Helmut Friedrich

   Research Articles Pages: 303 - 312

2. Quadrupole test particle as a detector of gravitational waves

   • Risto Tammelo

   Research Articles Pages: 313 - 319

3. Conformal changes of metrics and the initial-value problem of general relativity

   • Eckehard W. Mielke

   Research Articles Pages: 321 - 345

4. On Shirokov's “One New Effect of the Einsteinian theory of Gravitation”

   • A. Nduka

   Research Articles Pages: 347 - 351

5. Geometric quantization and internal symmetry

   • D. J. R. Lloyd-Evans

   Research Articles Pages: 353 - 356

6. H-space and Robinson-Trautman solutions

   • M. Ludvigsen

   Research Articles Pages: 357 - 364

7. On the propagation of photons and neutrinos in curved space-time

   • J. B. Griffiths

   Research Articles Pages: 365 - 370