Tom Tourwé Wim Codenie Nick Boucart Vladimir Blagojevic Demystifying Release Definition: From Requirements Prioritization to Collaborative Value Quantification. 37-44 2009 REFSQ http://dx.doi.org/10.1007/978-3-642-02050-6_4 conf/refsq/2009 db/conf/refsq/refsq2009.html#TourweCBB09