Nicoletta Adamo-Villani Bedrich Benes Matt Brisbin Bryce Hyland A Natural Interface for Sign Language Mathematics. 70-79 2006 conf/isvc/2006-1 ISVC (1) http://dx.doi.org/10.1007/11919476_8 db/conf/isvc/isvc2006-1.html#Adamo-VillaniBBH06