L. Iñesta, N. Aquino, and J. Sánchez. Advances in Engineering Software, 40 (12):
1287 - 1296(2009)Designing, modelling and implementing interactive systems.
S. Lohmann, J. Kaltz, and J. Ziegler. Models in Software Engineering, volume 4364 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2007)