Gemma Grau Jennifer Horkoff Dominik Schmitz Samer Abdulhadi Eric S. K. Yu Fostering Investigation, Collaboration, and Evaluation: the i* Wiki Experience. 33-36 2008 iStar http://ceur-ws.org/Vol-322/paper9.pdf conf/istar/2008 db/conf/istar/istar2008.html#GrauHSAY08