William Chung William H. Harrison Vincent J. Kruskal Harold Ossher Stanley M. Sutton Jr. Peri L. Tarr Matthew Chapman Andrew Clement Helen Hawkins Sian January The concern manipulation environment. 666-667 2005 conf/icse/2005 ICSE http://doi.acm.org/10.1145/1062455.1062599 db/conf/icse/icse2005.html#ChungHKOSTCCHJ05