Evgenia Hristova Maurice Grinberg Emilian Lalev Biosignal Based Emotion Analysis of Human-Agent Interactions. 63-75 2008 COST 2102 Conference (Prague) http://dx.doi.org/10.1007/978-3-642-03320-9_7 conf/cost/2008p db/conf/cost/cost2008p.html#HristovaGL08