Artuso, Alysson Ramos, and Stefan Ting Graf. “Science and Math Courses in a Danish Digital Learning Platform: What Makes Them More or Less Popular?”. IARTEM e-journal 12, no. 1 (July 31, 2020). Accessed January 25, 2021. https://ojs.bibsys.no/index.php/IARTEM/article/view/726.