Oana Nicolae, Gerd Wagner, Jens Werner. Towards an Executable Semantics for Activities Using Discrete Event Simulation. In Stefanie Rinderle-Ma, Shazia Wasim Sadiq, Frank Leymann, editors, Business Process Management Workshops, BPM 2009 International Workshops, Ulm, Germany, September 7, 2009. Revised Papers. Volume 43 of Lecture Notes in Business Information Processing, pages 369-380, Springer, 2009. [doi]