Daniel Fallman Anneli Mikaelsson Björn Yttergren The Design of a Computer Mouse Providing Three Degrees of Freedom. 53-62 2007 conf/hci/2007-2 HCI (2) http://dx.doi.org/10.1007/978-3-540-73107-8_7 db/conf/hci/hci2007-2.html#FallmanMY07