@inproceedings{CHI-2001-Muller,
	author        = "Michael J. Muller",
	booktitle     = "{Proceedings of the 19th ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/365024.365054",
	isbn          = "1-58113-327-8",
	pages         = "90--97",
	publisher     = "{ACM}",
	title         = "{Layered participatory analysis: new developments in the CARD technique}",
	year          = 2001,
}