Marc Cavazza Jean-Luc Lugrin Sean Crooks Alok Nandi Mark Palmer Marc Le Renard Causality and virtual reality art. 4-12 2005 conf/candc/2005 Creativity & Cognition http://doi.acm.org/10.1145/1056224.1056228 db/conf/candc/candc2005.html#CavazzaLCNPR05