1. On the maximization of the central gravitational red-shift of a schwarzschild sphere with a given surface gravitational red-shift

   • J. V. Narlikar
   • P. K. Das

   Research Articles Pages: 769 - 780

2. The equation of motion and gravitational radiation of a small extended spherically symmetric mass

   • G. Lessner

   Research Articles Pages: 781 - 803

3. A simplified form for the Hamiltonian and Lagrangian of the spin-independent gravitational two-body system

   • R. F. O'connell

   Research Articles Pages: 805 - 808

4. On the existence of a general rotating solution of Einstein's equations

   • Jamal N. Islam

   Research Articles Pages: 809 - 815

5. Axisymmetric gravitational fields

   • C. Reina
   • A. Treves

   Review Article Pages: 817 - 838

6. The Bi-metric theory of gravitation

   • Nathan Rosen

   Letter to the Editor Pages: 839 - 840