Dirac Equation from the Hamiltonian and the Case With a Gravitational Field Mayeul Arminjon Original Article 25 April 2006 Pages: 225 - 247
The Role of a Specific Response of Media in the Vavilov-Cherenkov Effect M. VillavicencioJ. A. E. Roa-NeriJ. L. Jiménez Original Article 25 April 2006 Pages: 249 - 258
Causal Paradoxes: A Conflict Between Relativity and the Arrow of Time Hrvoje Nikolić Original Article 25 April 2006 Pages: 259 - 267
Energy in the Schwarzschild-de Sitter Spacetime Mustafa SaltiOktay Aydogdu Original Article 25 April 2006 Pages: 269 - 276
The Cosmic Time in Terms of the Redshift Moshe CarmeliJohn G. HartnettFirmin J. Oliveira Original Article 25 April 2006 Pages: 277 - 283
A Three-Stage Quantum Cryptography Protocol Subhash Kak Original Article 25 April 2006 Pages: 293 - 296