Ana Paiva Rui Prada Rosalind W. Picard Affective Computing and Intelligent Interaction, Second International Conference, ACII 2007, Lisbon, Portugal, September 12-14, 2007, Proceedings ACII Lecture Notes in Computer Science 4738 Springer 2007 978-3-540-74888-5 db/conf/acii/acii2007.html