Voigt, Christin, Linda Blömer, Jonas Kötter, and Uwe Hoppe. “Agile Change to Digital Teaching During and After Corona Pandemic for Flipped Classroom Courses: An Overview of Tasks and Responsibilities”. Journal of e-learning Research 1, no. 1 (September 30, 2021): 11–22. Accessed October 9, 2025. https://diamondopen.com/journals/index.php/jelr/article/view/50.