1. Hobbit 2011 http://hobbit.acin.tuwien.ac.at/index.html Hobbit 2011 http://hobbit.acin.tuwien.ac.at/index.html
2. Psychological Implications of Domestic Assistive Technology for the Elderly;Cesta A.;PsychNology Journal,2007
3. KSERA http://ksera.ieis.tue.nl. KSERA http://ksera.ieis.tue.nl.