U. Asif, S. von Cavallar, J. Tang, and S. Harrer. ECAI, volume 325 of Frontiers in Artificial Intelligence and Applications, page 2656-2663. IOS Press, (2020)
D. Bimamisa, M. Müller, S. Harrer, and G. Wirtz. ESOCC Workshops, volume 707 of Communications in Computer and Information Science, page 176-188. Springer, (2016)
A. Harrer, N. Pinkwart, B. McLaren, and O. Scheuer. Intelligent Tutoring Systems, volume 5091 of Lecture Notes in Computer Science, page 715-718. Springer, (2008)