Soetisna HR, Widyanti A, Syafira A, Pujiartati DA. Risk Assessment during Covid-19 and Learning from Home: Evidence from University Students in Indonesia. J. Optimasi Sist. Ind. [Internet]. 2021 May 18 [cited 2025 Jan. 22];20(1):42–51. Available from: http://josi.ft.unand.ac.id/index.php/josi/article/view/149