@inproceedings{DiGRA-2007-GruterO,
	author        = "Barbara Grüter and Miriam Oks",
	booktitle     = "{Proceedings of the Fourth DiGRA International Conference: Situated Play}",
	ee            = "http://www.digra.org/digital-library/publications/situated-play-and-mobile-gaming/",
	publisher     = "{Digital Games Research Association}",
	title         = "{Situated Play and Mobile Gaming}",
	year          = 2007,
}