Volume 33, October-December, October 2012, Pages 254-260
Y. Dewer; Eldoksch H.; A. Kenawy
Volume 32, JULY- SEPTEMBER, September 2011, Pages 337-345
Hany K. Abd-Elhady; El-Zahi S. El-Zahi
Volume 30, JULY- SEPTEMBER, September 2009, Pages 412-418
Entsar I. Rabea