Volume 28, Issue 1, January 2014, Pages 89-107
S.A. Ismail,; A.M. Abd El-Hafeez; O.A. Galal; H.A Awadalla
Volume 26, Issue 2, July 2012, Pages 30-44
H.A. Awadalla,; S.A. Ismail,; A.M. Abd-El-Hafeez