Mario Bravetti Gianluigi Zavattaro CONCUR 2009 - Concurrency Theory, 20th International Conference, CONCUR 2009, Bologna, Italy, September 1-4, 2009. Proceedings 5710 2009 http://dx.doi.org/10.1007/978-3-642-04081-8 978-3-642-04080-1 CONCUR Lecture Notes in Computer Science Springer db/conf/concur/concur2009.html