Naji, Ahmed Saib. “A Mathematical Model to Predict the Liquid Holdup in Vertical Slug Two-Phase Flow in Pipes”. Kufa Journal of Engineering 1, no. 2 (May 19, 2014): 45–59. Accessed August 7, 2026. https://journal.uokufa.edu.iq/index.php/kje/article/view/1303.