Annema, Jan Henk, Yorick Poels, Mathijs Verstraete, Mieke Van Gils, and Bieke Zaman. 2011. “Are You a Gamer? A Qualitative Study Concerning the Parameters Used to Categorize Casual and Hardcore Gamers.” July 2011. https://lirias.kuleuven.be/handle/123456789/323741.

Annema, Jan-Henk, Yorick Poels, Bieke Zaman, and Frederik Cornillie. 2012. “Design of Web-Based Mini-Games for Language Learning: An Evidence-Based and User-Centred Approach.” In Serious Games: The Challenge, edited by Stefan De Wannemacker, Sylke Vandercruysse, and Geraldine Clarebout, 79–81. Communications in Computer and Information Science 280. Springer Berlin Heidelberg. http://link.springer.com/chapter/10.1007/978-3-642-33814-4_13.

Poels, Yorick, Jan-Henk Annema, Bieke Zaman, and Frederik Cornillie. 2012. “Developing User-Centered Video Game Concepts for Language Learning.” In , 11–16. http://www.thinkmind.org/index.php?view=article&articleid=achi_2012_1_30_20253.

Ribbens, Wannes, and Yorick Poels. 2009. “Researching Player Experiences through the Use of Different Qualitative Methods.” In Breaking New Ground: Innovation in Games, Play, Practice and Theory: Proceedings of the 2009 Digital Games Research Association Conference. London: Brunel University. http://www.digra.org:8080/Plone/dl/display_html?chid=09287.32326.pdf.

Ribbens, Wannes, Yorick Poels, and Gertjan Lamotte. 2011. “Fail with Honour or Win by Cheating? A Qualitative and Quantitative Exploration of Cheaters’ Motivations in Online Multiplayer Games.” May 2011. https://lirias.kuleuven.be/handle/123456789/324245.

Zaman, Bieke, Yorick Poels, Nicky Sulmon, Jan-Henk Annema, Mathijs Verstraete, Frederik Cornillie, Dirk De Grooff, and Piet Desmet. 2012. “Concepts and Mechanics for Educational Mini-Games A Human-Centred Conceptual Design Approach Involving Adolescent Learners and Domain Experts.” International Journal On Advances in Intelligent Systems 5 (3 and 4): 567–76. http://www.thinkmind.org/index.php?view=article&articleid=intsys_v5_n34_2012_25.