When the fingers do the talking: A study of group participation with varying constraints to a tabletop interface.

Paul Marshall Eva Hornecker Richard Morris Nick Sheep Dalton Yvonne Rogers When the fingers do the talking: A study of group participation with varying constraints to a tabletop interface. 33-40 2008 Tabletop http://dx.doi.org/10.1109/TABLETOP.2008.4660181 conf/tabletop/2008 db/conf/tabletop/tabletop2008.html#MarshallHMDR08