Volume 20, Issue 1, March 2012, Pages 15-27
Rihan M. K.; Elsebai M. N.; Hussein M. S.
Volume 18, Issue 1, March 2010, Pages 23-29
Abdulrahman A Alazba; Abdullah A Alsadon; Ibrahim M Alshahwan
Volume 13, Issue 3, September 2005, Pages 581-607
A Al-Humaid; Kassem M.A.