@inproceedings{DiGRA-2003-Jarvinen,
	author        = "Aki Järvinen",
	booktitle     = "{Proceedings of the Second Digital Games Research Conference: Level Up}",
	ee            = "http://www.digra.org/digital-library/publications/making-and-breaking-games-a-typology-of-rules/",
	title         = "{Making and breaking games: a typology of rules}",
	year          = 2003,
}