Alice Oh Harold Fox Max Van Kleek Aaron Adler Krzysztof Gajos Louis-Philippe Morency Trevor Darrell Evaluating look-to-talk: a gaze-aware interface in a collaborative environment. 650-651 2002 conf/chi/2002a CHI Extended Abstracts http://doi.acm.org/10.1145/506443.506528 db/conf/chi/chi2002a.html#OhFKAGMD02