N. Trcka, {. Aalst, and N. Sidorova. Advanced Information Systems Engineering, Proceedings of the 21st International
Conference on Advanced Information Systems Engineering (CAiSE'09), volume 5565 of Lecture Notes in Computer Science, page 425--439. Springer-Verlag, Berlin, (2009)
N. Trcka, {. Aalst, and N. Sidorova. Proceedings of the 5th IEEE Conference on Automation Science and Engineering (CASE 2009), page 7--12. IEEE Computer Society Press, (2009)