Wang, D. ., Samaka, M. ., Miao, Y. ., Ali, Z. ., & Hoppe, H. U. (2016). A model-driven PBL application to support the authoring, delivery, and execution of PBL processes. Research and Practice in Technology Enhanced Learning, 11. Retrieved from https://rptel.apsce.net/index.php/RPTEL/article/view/2016-11006