TACTUS: A Hardware and Software Testbed for Research in Multi-Touch Interaction. - Paul Varcholik; Joseph J. LaViola Jr.; Denise M. Nicholson (HCI (2), 2009)

The Bespoke 3DUI XNA Framework: a low-cost platform for prototyping 3D spatial interfaces in video games. - Paul D. Varcholik; Joseph J. LaViola Jr.; Charles E. Hughes (Sandbox@SIGGRAPH, 2009)

Breaking the status quo: Improving 3D gesture recognition with spatially convenient input devices. - Michael Hoffman; Paul Varcholik; Joseph J. LaViola Jr. (VR, 2010)

The Wiimote and Beyond: Spatially Convenient Devices for 3D User Interfaces. - Chadwick A. Wingrave; Brian M. Williamson; Paul Varcholik; Jeremy Rose; Andrew Miller; Emiko Charbonneau; Jared N. Bott; Joseph J. LaViola Jr. (IEEE Computer Graphics and Applications, 2010)

Establishing a baseline for text entry for a multi-touch virtual keyboard. - Paul Varcholik; Joseph J. LaViola Jr.; Charles E. Hughes (Int. J. Hum. Comput. Stud., 2012)