Belghitar, E.B., M.T. Meftah, and Z. Malki. “Model of Angular Momentum Transport at the Protoplane-Tary Disk Evolution and Disk Surface Density”. Ukrainian Journal of Physics 66, no. 11 (November 30, 2021): 921. Accessed November 23, 2024. https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019607.