Volume 42, Issue 3, June 2018, Pages 323-344
Ahmed, Kh. H.; Lotfy, M. A.; Farrag, Naglaa, A.
Volume 39, Issue 3, September 2017, Pages 385-415
Sobh, M. M.; Ahmed, Kh. H.; Hemdan, Somaya, H.
Volume 36, Issue 1, December 2016, Pages 381-398
Ahmed, Kh. H.; Mahmoud, M. S.; Abdou, E. A.