Keimer, Imke, Tatiana Agnesens, and Carsten Kuechler. 2022. “Interactive PDF Forms to Conduct Online Examinations in University Education: Practical Experience and Lessons Learned”. International Journal of Emerging Technologies in Learning (iJET) 17 (11):pp. 4-16. https://doi.org/10.3991/ijet.v17i11.27905.