Volume 33, October-December, October 2012, Pages 249-253
Mona M. Mahmoud; Samia M. El-Hattab
Volume 33, April-June, April 2012, Pages 65-72
Mona M. Mahmoud; H. A. Mesbah; Nagda A. A. El–Sayed
Volume 30, JANUARY- MARCH, March 2009, Pages 67-70
Mona M. Mahmoud; Wagiha H. Yehia