1. “Slow” and “fast” light
2. Whats Wrong With Relativity ? Bulletin Of The Institute Of;G Brown;Physics And Physical Society,1967
3. Quantum Mechanics And The Equivalence Principle;P Davies;Classical And Quantum Gravity,2004
4. Black Holes Constrain Varying Constants;P Davies;Nature,2002
5. Quantum Vacuum Friction;P Davies;Journal of Optics B: Quantum And Semi-Classical Optics,2005