L. Constantine. Interactive Systems. Design, Specification, and Verification, volume 2844 of Lecture Notes in Computer Science, Springer, Berlin / Heidelberg, (2003)
J. Pérez-Medina, S. Dupuy-Chessa, and A. Front. Task Models and Diagrams for User Interface Design, volume 4849 of Lecture Notes in Computer Science, Springer, Berlin / Heidelberg, (2007)
A. Hoffmann, H. Hoffmann, and J. Leimeister. Workshop über Selbstorganisierende, adaptive, kontextsensitive verteilte Systeme (SAKS 2010). Electronic Communications of the EASST, 27, page 9. Berlin, Germany, European Association of Software Science and Technology (EASST), (2010)188 (36-10).
M. Kranz, W. Spiessl, and A. Schmidt. Proc. Fifth Annual IEEE International Conference on Pervasive Computing and Communications PerCom '07, page 79--86. (2007)
J. Müller, F. Alt, D. Michelis, and A. Schmidt. Proceedings of the international conference on Multimedia, page 1285--1294. New York, NY, USA, ACM, (2010)