Tommaso Di Noia Francesco Buccafurri E-Commerce and Web Technologies, 10th International Conference, EC-Web 2009, Linz, Austria, September 1-4, 2009. Proceedings 5692 2009 http://dx.doi.org/10.1007/978-3-642-03964-5 978-3-642-03963-8 EC-Web Lecture Notes in Computer Science Springer db/conf/ecweb/ecweb2009.html