Volume 8, Issue 2, October 2015, Pages 69-80
L. O. Raji; O. O. Ajala; U. I. Osuagwuh
Volume 4, Issue 1, April 2011, Pages 51-67
Shireen A. Hafez A. Hafez; Samir M. El-shafey; Thomas Caceci
Volume 2, Issue 2, October 2009, Pages 23-40
Mohamed Alkafafy