Soap: how to make a mouse work in mid-air.

Patrick Baudisch Mike Sinclair Andrew Wilson Soap: how to make a mouse work in mid-air. 1935-1940 2007 conf/chi/2007a CHI Extended Abstracts http://doi.acm.org/10.1145/1240866.1240928 db/conf/chi/chi2007a.html#BaudischSW07