Palomino, P. T., Toda, A. M., Rodrigues, L., Oliveira, W., Nacke, L., & Isotani, S. (2022). An ontology for modelling user’ profiles and activities in gamified education. Research and Practice in Technology Enhanced Learning, 18. Retrieved from https://rptel.apsce.net/index.php/RPTEL/article/view/2023-18018