Atef، A. H.، Liu، K.، و Gao، S. (2011). APPARENT WEEKLY AND DAILY EARTHQUAKE PERIODICITIES IN THE WESTERN UNITED STATES, AND EVOLUTION OF WADI KUBBANIA IN EGYPT (رسالة دكتوراه غير منشورة). Missouri University of Science and Technology، رولا. مسترجع من http://search.mandumah.com/Record/616170
Atef، Ali Hadi، Kelly Liu، و Stephen Gao. "APPARENT WEEKLY AND DAILY EARTHQUAKE PERIODICITIES IN THE WESTERN UNITED STATES, AND EVOLUTION OF WADI KUBBANIA IN EGYPT" رسالة دكتوراه. Missouri University of Science and Technology، رولا، 2011. مسترجع من http://search.mandumah.com/Record/616170