Qudus, N. ., S. . Maulana, A. . Kusumastuti, M. N. . Rozaq, and S. . Anis. “Investigation of the Effect of Fluids Superficial Velocity on Initiation and Development of Slug Flow in a Horizontal Hydraulics Pipe”. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, vol. 70, no. 2, Jan. 2021, pp. 59-75, https://www.akademiabaru.com/submit/index.php/arfmts/article/view/2954.