@inproceedings{CHI-2009-KeranenBK,
	author        = "Jaakko Keränen and Janne Bergman and Jarmo Kauko",
	booktitle     = "{Proceedings of the 27th ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/1518701.1518935",
	isbn          = "978-1-60558-246-7",
	pages         = "1531--1534",
	publisher     = "{ACM}",
	title         = "{Gravity sphere: gestural audio-tactile interface for mobile music exploration}",
	year          = 2009,
}