Volume 38, July-September, September 2017, Pages 537-542
Medhat A.E.El- Dalil
Volume 34, January-March, March 2013, Pages 113-120
Sally S. El-Sayed; Neveen F. Agamy
Volume 30, OCTOBER- DECEMBER, December 2009, Pages 461-470
Yassin Naglaa, M.E; Enas A. Tayel