Volume 2021, Issue 12, November and December 2021, Pages 11-22
Afaf S. Zaghrout; Youssra Ali; Doaa K. Elpagouri
Volume 2013, Issue 12, November and December 2013, Pages 49-64
MAGED AHMED; RASHA AHMED; AHMED MERDASH; HUSSEIN EL-KABBANY