Chun Ouyang Eric Verbeek Wil M. P. van der Aalst Stephan Breutel Marlon Dumas Arthur H. M. ter Hofstede 162-198 2007 67 Sci. Comput. Program. 2-3 http://dx.doi.org/10.1016/j.scico.2007.03.002 db/journals/scp/scp67.html#OuyangVABDH07