1. Bernstein, V., Soffer, P.: Identifying and quantifying visual layout features of business process models. In: Proceedings of BPMDS 2015 and EMMSAD 2015, pp. 200–213. Springer, Berlin (2015)
2. Corbin, J., Strauss, A.: Basics of Qualitative Research: Techniques and Procedures for Developing Grounded Theory. Sage Publications, Thousand Oaks (1998)
3. Cormen, T.H., Stein, C., Rivest, R.L., Leiserson, C.E.: Introduction to Algorithms, 2nd edn. The MIT Press, Cambridge (2001)
4. Creswell, J.: Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. SAGE Publications, Incorporated, Thousand Oaks (2009)
5. Effinger, P., Jogsch, N., Seiz, S.: On a study of layout aesthetics for business process models using BPMN. In: Business Process Modeling Notation, pp. 31–45. Springer, Berlin (2010)