Volume 65, Issue 162, July 2019, Pages 111-120
SABER KOTB; MOUSTAFA AHMED
Volume 62, Issue 149, April 2016, Pages 1-12
HAZEM AAMER; DALIA HASSAN; SABER KOTB
Volume 61, Issue 144, January 2015, Pages 194-200
SABER KOTB; MOHAMMED SAYED