Haralambos Mouratidis Colette Rolland Advanced Information Systems Engineering - 23rd International Conference, CAiSE 2011, London, UK, June 20-24, 2011. Proceedings 6741 2011 http://dx.doi.org/10.1007/978-3-642-21640-4 978-3-642-21639-8 CAiSE Lecture Notes in Computer Science Springer db/conf/caise/caise2011.html