1. Unstable neutrinos can do it!

   • M. M. Vasanthi

   Research Articles Pages: 763 - 770

2. Sectional curvature in general relativity

   • G. S. Hall
   • A. D. Rendall

   Research Articles Pages: 771 - 789

3. Uncertainty principle and the horizon size of our universe

   • T. Padmanabhan
   • T. R. Seshadri

   Research Articles Pages: 791 - 796

4. General relativistic electromagnetic mass models of neutral spherically symmetric systems

   • J. Ponce de León

   Research Articles Pages: 797 - 807

5. Mass and dual mass: A gravitational analogue of the Dirac quantization rule and its physical implications

   • Anne Magnon
   • Han -Ying Guo

   Research Articles Pages: 809 - 825

6. Gravitational field with toroidal topology

   • B. W. Stewart
   • Louis Witten
   • Demetrios Papadopoulos

   Research Articles Pages: 827 - 839

7. The verification of Killing tensor components for metrics in general relativity using the computer algebra system SHEEP

   • G. C. Joly

   Research Articles Pages: 841 - 845