Volume 38, October-December, October 2017, Pages 884-900
Saad A. S. A.; Elsayed H. M. Tayeb; Laila A. Mohamed; S. M. I. Hassan
Volume 38, October-December, October 2017, Pages 921-932
Saad, A. S. A.; Elsayed H. M. Tayeb; Houria L. Metraw