Masaki Omata Kenji Matsumura Atsumi Imamiya A Pressure-Sensing Mouse Button for Multilevel Click and Drag. 434-446 2007 conf/interact/2007-1 INTERACT (1) http://dx.doi.org/10.1007/978-3-540-74796-3_42 db/conf/interact/interact2007-1.html#OmataMI07