1. Aharonov, Y., Vaidman, L.: Sending signals to space-like separated regions. Z. Naturforsch 56a, 20–26 (2001) [quantum-ph/0102083]
2. Allais, M.: L’ Anisotropy de l’ Espace. Editions Clément Juglar, Paris (1997)
3. Allan, D.W., Davis, D.D., Weiss, M., et al.: Accuracy of international time and frequency comparisons via global positioning system satellites in common-view. IEEE Trans. Instrum. Meas. IM-32, 118–125 (1985)
4. Alley, C.: Proper time experiments in gravitational fields with atomic clocks, aircraft, and laser light pulses. In: Meystre, P., Scully, M.O. (eds.) Quantum Optics, Experimental Gravity, and Measurement Theory. Proceedings Conference on Bad Windsheim. Plenum, New York (1981). ISBN 0-306-41354-X
5. Amelino-Camelia, G.: Testable scenario for relativity with minimum length. Phys. Lett. B 510, 255–263 (2001)