In: Klaus Miesenberger; Arthur Karshmer; Petr Penaz; Wolfgang Zagler (Hrsg.). Computers Helping People with Special Needs. International Conference on Computers Helping People with Special Needs (ICCHP-12), 13th, July 9-13, Linz, Austria, Pages 392-398, Lecture Notes in Computer Science (LNCS), Vol. 7383, ISBN 978-3-642-31533-6, Springer, Berlin / Heidelberg, 7/2012.