Eduardo Carrasco Gorka Epelde Aitor Moreno Amalia Ortiz Igor García Cristina Buiza Elena Urdaneta Aitziber Etxaniz Mari Feli González Andoni Arruti Natural Interaction between Avatars and Persons with Alzheimer's Disease. 38-45 2008 ICCHP http://dx.doi.org/10.1007/978-3-540-70540-6_5 conf/icchp/2008 db/conf/icchp/icchp2008.html#CarrascoEMOGBUEGA08