Volume 37, January-March, March 2016, Pages 1-9
Aly H. El-Naggar; Naglaa M. Esmaiel; Assem A. El-Naggar
Volume 31, APRIL- JUNE, April 2010, Pages 163-174
A. A. M. El-Naggar; A. H. El-Naggar; N. M. Ismaiel