Jeroen Lichtenauer Gineke A. ten Holt Emile A. Hendriks Marcel J. T. Reinders Abbie Vanhoutte Irene Kamp Jeroen Arendsen Ans J. van Doorn Huib de Ridder Elmar Wenners Mariëlle Elzenaar Gerard Spaai Connie Fortgens Marjan Bruins A learning environment for sign language. 1-2 2008 FG http://dx.doi.org/10.1109/AFGR.2008.4813421 conf/fgr/2008 db/conf/fgr/fg2008.html#LichtenauerHHRVKADRWESFB08