K. Sousa, H. Mendonça, and J. Vanderdonckt. Task Models and Diagrams for User Interface Design, volume 4849 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2007)
S. Lohmann, J. Kaltz, and J. Ziegler. Models in Software Engineering, volume 4364 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2007)
J. Sprinkle, B. Rumpe, H. Vangheluwe, and G. Karsai. Model-Based Engineering of Embedded Real-Time Systems, volume 6100 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2011)