Volume 40, APRIL- JUNE, April 2019, Pages 312-326
Emad Aboukila
Volume 39, April-June, April 2018, Pages 177-189
El-Taib F Hussain; Mohi El-Din M.Retiba; Ahmed M. Ehmida
Volume 37, January-March, March 2016, Pages 138-145
Fatma A. Faraj; Ahmed S.Buhedma