Jennifer Horkoff Golnaz Elahi Samer Abdulhadi Eric S. K. Yu Reflective Analysis of the Syntax and Semantics of the i* Framework. 249-260 2008 ER Workshops http://dx.doi.org/10.1007/978-3-540-87991-6_31 conf/er/2008w db/conf/er/erw2008.html#HorkoffEAY08