Esther Kuindersma, Jelke van der Pal, H. Jaap van den Herik, Aske Plaat. Voluntary Play in Serious Games. In Alessandro De Gloria, Remco C. Veltkamp, editors, Games and Learning Alliance - 4th International Conference, GALA 2015, Rome, Italy, December 9-11, 2015, Revised Selected Papers. Volume 9599 of Lecture Notes in Computer Science, pages 131-140, Springer, 2015. [doi]
Abstract is missing.