Gerhard Weber 0002 Helen Petrie Jenny S. Darzentas Accessible Design in the Digital World. 720-721 2011 INTERACT (4) https://doi.org/10.1007/978-3-642-23768-3_132 https://www.wikidata.org/entity/Q59590055 conf/interact/2011-4 db/conf/interact/interact2011-4.html#WeberPD11