Volume 29, Issue 2, April 2012, Pages 763-788
Kamal H. Amer; M.A. Aboamera; A.H. Gomaa; Sobhy B. Deghedy
Volume 26, Issue 4, October 2009, Pages 1836-1854
A.A. Badr; A.H. Gomaa; K.H. Amer; A.S. Hamza