صلاح الدين, أحمد; 						عبد الهادي, محمد عثمان.
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<strong>Gezira Journal of Engineering and Applied Sciences</strong>, [S.l.], v. 11, n. 1, july 2018.
ISSN 1858-5698. Available at: &lt;<a href="http://37.60.236.48/index.php/gjeas/article/view/519" target="_new">http://37.60.236.48/index.php/gjeas/article/view/519</a>&gt;. Date accessed: 03 june 2026.