Volume 39, April-June, April 2018, Pages 244-249
Mahmud A. A. Rahuma
Volume 39, April-June, April 2018, Pages 177-189
El-Taib F Hussain; Mohi El-Din M.Retiba; Ahmed M. Ehmida
Volume 38, April-June, June 2017, Pages 238-249
Mohamed A. Ghonema