G. Vulcu, W. Derguech, and S. Bhiri. Business Process Management Workshops, volume 66 of Lecture Notes in Business Information Processing, Springer, Berlin, (2011)
C. Decker, T. Riedel, M. Beigl, L. de Souza, P. Spiess, J. Müller, and S. Haller. Proceedings of the 3rd IET International Conference on Intelligent Environments (IE 07), Ulm, Germany, page 40--47. Institution of Engineering and Technology (IET), London, (2007)