Prof. Abdullah Saad Al-Rawaf  أ.د. عبدالله سعد الرواف
Professor,
 
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.