Charles Lenay Indira Thouvenin Anne Guénand Olivier Gapenne John Stewart Barthelemy Maillet Designing the ground for pleasurable experience. 35-58 2007 DPPI http://doi.acm.org/10.1145/1314161.1314165 conf/dppi/2007 db/conf/dppi/dppi2007.html#LenayTGGSM07