@inproceedings{CHI-2011-ChiuLC,
	author        = "Patrick Chiu and Chunyuan Liao and Francine Chen",
	booktitle     = "{Proceedings of the 29th ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/1978942.1979174",
	isbn          = "978-1-4503-0228-9",
	pages         = "1591--1600",
	publisher     = "{ACM}",
	title         = "{Multi-touch document folding: gesture models, fold directions and symmetries}",
	year          = 2011,
}