Volume 15, Issue 2, September 2007, Pages 361-368
M K Hassanein; M A Abdrabbo; A A Farag
Volume 13, Issue 2, September 2005, Pages 297-307
M B.A El-Koomy; A A Abdel-Gawad; A. M.A Abo-Shetaia; G .M.A Mahgoub