Volume 20, Issue 2, August 2017, Pages 225-236
Fatma T.F. Abd- El Ghany; Walaa H. Khalifa; A. M.M. Saidahmed
Volume 19, Issue 2, August 2016, Pages 325-335
A. H. Mohamed; Fatma T.F. Abd- El Ghany; A. A.S. Mahgoup