Dominique Archambault Bernhard Stöger Mario Batusic Claudia Fahrengruber Klaus Miesenberger A software model to support collaborative mathematical work between braille and sighted users. 115-122 2007 conf/assets/2007 ASSETS http://doi.acm.org/10.1145/1296843.1296864 db/conf/assets/assets2007.html#ArchambaultSBFM07