A Comparison of Direct and Indirect Multi-touch Input for Large Surfaces.

Dominik Schmidt Florian Block Hans Gellersen A Comparison of Direct and Indirect Multi-touch Input for Large Surfaces. 582-594 2009 INTERACT (1) http://dx.doi.org/10.1007/978-3-642-03655-2_65 conf/interact/2009-1 db/conf/interact/interact2009-1.html#SchmidtBG09