@inproceedings{DiGRA-2009-Johansson,
	author        = "Stefan J. Johansson",
	booktitle     = "{Proceedings of the Fifth DiGRA International Conference: Breaking New Ground: Innovation in Games, Play, Practice and Theory}",
	ee            = "http://www.digra.org/digital-library/publications/what-makes-online-collectible-card-games-fun-to-play/",
	publisher     = "{Digital Games Research Association}",
	title         = "{What Makes Online Collectible Card Games Fun to Play?}",
	year          = 2009,
}