Belghitar E, Meftah M, Malki Z. Model of Angular Momentum Transport at the Protoplane-tary Disk Evolution and Disk Surface Density. Ukr. J. Phys. [Internet]. 2021 Nov. 30 [cited 2024 Nov. 23];66(11):921. Available from: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019607