Hans Schuster Dimitrios Georgakopoulos Andrzej Cichocki Donald Baker Modeling and Composing Service-Based nd Reference Process-Based Multi-enterprise Processes. 247-263 http://dx.doi.org/10.1007/3-540-45140-4_17 2000 conf/caise/2000 CAiSE db/conf/caise/caise2000.html#SchusterGCB00