Volume 27, Issue 1, January 2013, Pages 21-31
M.R.K Ashry; K.M.R. Youssef; S.M.M. Abdou; A.A. El- Masry
Volume 26, Issue 1, January 2012, Pages 26-37
M.R.K Ashry; F.R. M Farrag; S. M. M. Abdou; M.F.I. El-Akram
Volume 24, Issue 2, July 2010, Pages 16-29
M.F.I El-Akram; S.M.M Abdou; M.R.K Ashry; F.R.M Farrag
Volume 22, Issue 2, July 2008, Pages 119-203
K.M.R Yousef,; M.R.K Ashry