@inproceedings { mascarenhas09, booktitle = {Autonomous Agents and Multiagent Systems - AAMAS 2009}, pages = {305-312}, publisher = {IFAMAAS}, title = {Using rituals to express cultural differences in synthetic character}, volume = {1}, year = {2009}, author = {Samuel Mascarenhas and João Miguel Assis Dias and Nuno Afonso and Sybille Enz and Ana Paiva} }