@inproceedings{CHI-2009-ZhaoNII,
	author        = "Shengdong Zhao and Koichi Nakamura and Kentaro Ishii and Takeo Igarashi",
	booktitle     = "{Proceedings of the 27th ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/1518701.1518730",
	isbn          = "978-1-60558-246-7",
	pages         = "173--182",
	publisher     = "{ACM}",
	title         = "{Magic cards: a paper tag interface for implicit robot control}",
	year          = 2009,
}