J. Winkler, and A. Vogelsang. Requirements Engineering: Foundation for Software Quality (REFSQ), page 57--71. Cham, Springer International Publishing, (2018)
T. Yue, L. Briand, and Y. Labiche. Model Driven Engineering Languages and Systems, volume 5795 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2009)