Volume 47, Issue 4, August 2016, Pages 72-83
Volume 45, Issue 5, December 2014, Pages 53-78
Volume 42, Issue 2, June 2011, Pages 81-93
M. N. Taha; M. Z. El-Hifny; A. A. Ismail; A. M. Tammam
Volume 37, Issue 4, December 2006, Pages 24-35
M K. Omara;; M. Y. Hussein; M. M. El-Defrawy; M I.M. Hassan