Elhag , Elmahdi Ibrahim; Elmahdi , Abedelmoniem, Elhag; Aballaha , AbdAlmalaik Abdelhakeim; Mohammed , Abakar Adam; Ahmed , Eldaw Abdelrahim; Hassan , Omer Hassan Mohammed; Dawoud , Abakar Adam; Peter , Kern; Thomas , Romig
(Sudan University of Science and Technology, 2013)