Twittie Senivongse Rui Oliveira Distributed Applications and Interoperable Systems, 9th IFIP WG 6.1 International Conference, DAIS 2009, Lisbon, Portugal, June 9-11, 2009. Proceedings 5523 2009 http://dx.doi.org/10.1007/978-3-642-02164-0 978-3-642-02163-3 DAIS Lecture Notes in Computer Science db/conf/dais/dais2009.html