Maria Paula Corrêa Angeloni, Hamadou Saliah-Hassane, Juarez Bento da Silva, João Bosco da Mota Alves. Model to Evaluate Users' Engagement to Augmented Reality Using xAPI. In Michael E. Auer, Dominik May, editors, Cross Reality and Data Science in Engineering - Proceedings of the 17th International Conference on Remote Engineering and Virtual Instrumentation, REV 2020, Athens, GA, USA, 26-28 February, 2020. Volume 1231 of Advances in Intelligent Systems and Computing, pages 320-329, Springer, 2020. [doi]