J. Bezivin, M. Barbero, and F. Jouault. Fourth International Workshop on Model-Based Methodologies for Pervasive and Embedded Software (MOMPES '07), page 3-7. IEEE, (March 2007)
M. Blumendorf, G. Lehmann, and S. Albayrak. Proceedings of the 2nd ACM SIGCHI symposium on Engineering interactive computing systems, page 9--18. New York, NY, USA, ACM, (2010)