Guiling Wang Jinlei Jiang Meilin Shi Modeling Contexts in Collaborative Environment: A New Approach. 23-32 2006 conf/cscwd/2006lncs CSCWD (Selected Papers) http://dx.doi.org/10.1007/978-3-540-72863-4_3 db/conf/cscwd/cscwd2006lncs.html#WangJS06a