Steven Fraser Angela Martin Robert Biddle David Hussman Granville Miller Mary Poppendieck Linda Rising Mark Striebeck The role of the customer in software development: the XP customer - fad or fashion? 148-150 2004 conf/oopsla/2004 OOPSLA Companion http://doi.acm.org/10.1145/1028664.1028723 db/conf/oopsla/oopsla2004.html#FraserMBHMPRS04