@article {24938,
	title = {ACM International Conference Proceeding Series},
	journal = {Feedback-based gameplay metrics: Measuring player experience via automatic visual analysis},
	year = {2012},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84865332327\&partnerID=MN8TOARS},
	author = {Marczak, R. and Van Vught, J. and Nacke, L.E. and Schott, G.}
}
