Drag-and-drop interface for registration-free object delivery. - Kentaro Ishii; Yoshiki Takeoka; Masahiko Inami; Takeo Igarashi (RO-MAN, 2010)

Z-touch: a multi-touch system for detecting spatial gestures near the tabletop. - Yoshiki Takeoka; Takashi Miyaki; Jun Rekimoto (SIGGRAPH Talks, 2010)

Z-touch: an infrastructure for 3d gesture interaction in the proximity of tabletop surfaces. - Yoshiki Takeoka; Takashi Miyaki; Jun Rekimoto (ITS, 2010)