- David W. Corne, Pierluigi Frisco, Gheorghe Paun, Grzegorz Rozenberg, Arto Salomaa, editors, Membrane Computing - 9th International Workshop, WMC 2008, Edinburgh, UK, July 28-31, 2008, Revised Selected and Invited Papers. Volume 5391 of Lecture Notes in Computer Science, Springer, 2009.