• From traditional to challenge-based learning : a case studyLorenz, Birgy; Kikkas, KaidoProceedings of the European Conference on e-Learning, ECEL, vol. 23, 12024 / p. 227-234 https://doi.org/10.34190/ecel.23.1.2516 https://www.scopus.com/sourceid/21100307487 https://www.scopus.com/pages/publications/85215660588?inward https://www.webofscience.com/wos/woscc/full-record/WOS:001438533400027