F. Lemmerich, M. Becker, and F. Puppe. Proceedings of the European Conference on Machine Learning and Knowledge Discovery in Databases (ECML PKDD), page 288--303. Berlin, Heidelberg, Springer, (2013)
Z. Ma, and F. Leymann. Proceedings of 9th Workshop on Business Process Modeling, Development
and Support (BPMDS '08): Business Process Life-Cycle:Design, Deployment,
Operation & Evaluation, (2008)