Volume 20, Issue 1, March 2010, Pages 303-305
Olfat E. Nakhla; Namaa A. Mohamed; Manal Awad; Mervat M. Ali
Volume 18, Issue 1, March 2008, Pages 159-162
Olfat E. Nakhla; Manal Awad; Soad M. Soliman; A. Michael