Volume 51, Issue 4, December 2020, Pages 82-88
Volume 47, Issue 3, June 2016, Pages 78-91
Volume 40, Issue 2, December 2009, Pages 69-91
talaat El-Mahdy; ayman kamal; Nagwa I.A. Mohamed
Volume 40, Issue 2, December 2009, Pages 136-159
Yaser Diab; dalia ElShoweickh; Salah Hefny Rateb
Volume 39, Issue 3, October 2008, Pages 31-41
El-Sayed, N.E; Mokhtar M. Shaaban