1. Business Process Management Initiative, http://www.bpmi.org/
2. Smith, H., Fingar, P.: Business Process Management: The third wave. Meghan-Kieffer (2003), ISBN: 978-0929652337
3. Weske, M.: BPM Concepts, Languages, Architectures. Springer, Heidelberg (2007) 978-3-540-73521-2
4. Mendling, J.: Metrics for process models. Springer, Heidelberg (2008) 978-3-540-89223-6
5. Lecture Notes in Computer Science;W.M.P. Aalst van der,2003