Volume 39, Issue 1, January 2016, Pages 61-79
K. A. Ibrahim; W. A. El-Askary; I. M. Sakr; Hamdy A. Omara
Volume 34, Issue 4, October 2011, Pages 361-375
K. A. Ibrahim; W. A. El-Askary; E. Wahba; Hamdy A. Omara