@conference {1475,
	title = {Conference on Human Factors in Computing Systems - Proceedings},
	booktitle = {Game user research},
	year = {2012},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84862642776\&partnerID=MN8TOARS},
	author = {Seif El-Nasr, M. and Desurvire, H. and Nacke, L. and Drachen, A. and Calvi, L.}
}
