M.S. Khidr, Khidr, خضر, Hikmat Sh. Mustafa, and حکمت. 2025. “Vertical Flow in Viscous Thin Films”. AL-Rafidain Journal of Computer Sciences and Mathematics 5 (1):33-41. https://rjps.uomosul.edu.iq/index.php/csmj/article/view/20066.