Volume 62, Issue 149, April 2016, Pages 94-100
EL-KHAMARY A. N.; MOHAMED EL-SHERIF; MOHAMED ABUMANDOUR; SAYED-AHMED A.S.; ABD EL-WAHED R.E.
Volume 59, Issue 138, July 2013, Pages 236-240
SADEIK M.; ALKATTAN L.M.
Volume 40.2, Issue 80, January 1999, Pages 119-127
E. El-Manakhly; M. Sultan