Paul Grünbacher Michael Halling Stefan Biffl Hasan Kitapci Barry W. Boehm Integrating Collaborative Processes andQuality Assurance Techniques: Experiences from Requirements Negotiation. 9-29 2004 20 J. of Management Information Systems 4 http://www.jmis-web.org/articles/v20_n4_p9/index.html db/journals/jmis/jmis20.html#GrunbacherHBKB04