أ.د.عبدالله سعد عبدالله الرواف

	Prof. Abdullah Saad Al-Rawaf أ.د. عبدالله سعد الرواف  Professor of theoretical physics.   Address: Physics and Astronomy Department, College of Science, King Saud University, P.O. box 2455 Riyadh, Saudi Arabia.   Contacts: Tel: +9661-4676248 Fax: +9661-4676379 e-mail: arawaf@ksu.edu.sa.