Konstantinos Zachos Neil A. M. Maiden Xiaohong Zhu Sara Jones Discovering Web Services to Specify More Complete System Requirements. 142-157 2007 conf/caise/2007 CAiSE http://dx.doi.org/10.1007/978-3-540-72988-4_11 db/conf/caise/caise2007.html#ZachosMZJ07