Volume 62, Issue 4, October 2011, Pages 494-502
I. H.H. Ali; M. A. El-Yazal
Volume 62, Issue 2, April 2011, Pages 145-152
I. H. Ali; M. A.H. Al-Falahy
Volume 61, Issue 4, October 2010, Pages 346-354
M. A. Hussain; I. H. Ali