S. Trewin, G. Zimmermann, and G. Vanderheiden. CUU '03: Proceedings of the 2003 Conference on Universal Usability, Vancouver, Canada, page 77-84. (2003)
P. Suàrez, B. Jùnior, and M. de Barros. TAMODIA '04: Proceedings of the 3rd Annual Conference on Task Models and Diagrams, Prague, Czech Republic, page 113-120. (2004)
I. Kurtev, J. Bézivin, F. Jouault, and P. Valduriez. OOPSLA '06: Companion to the 21st ACM SIGPLAN Symposium on Object-oriented Programming Systems, Languages, and Applications, Portland, OR, USA, page 602-616. (2006)
P. Bihler, M. Fotsing, G. Kniesel, and C. Joffroy. iiWAS '08: Proceedings of the 10th International Conference on Information Integration and Web-based Applications & Services, Linz, Austria, page 677-680. (2008)