David Raffo Robert Ferguson Siri-on Setamanit Bhuricha Deen Sethanandha Evaluating the impact of requirements analysis tools using simulation. 63-73 2008 13 Software Process: Improvement and Practice 1 http://dx.doi.org/10.1002/spip.364 db/journals/sopr/sopr13.html#RaffoFSS08