1. Baxter, P., Jack, S.: Qualitative case study methodology: study design and implementation for Novice Researchers. Qual. Rep. 13(4), 544–559 (2008)
2. Gantz, J., Reiznel, D.: The digital universe in 2020: big data, bigger digital shadows, and biggest growth in the far east. In: International Data Corporation (IDC) (2012)
3. Gilbert, M., Shegda, K., Chin, K., Koehler-Kruener, H.: Magic Quadrant for ECM 2014. Gartner Inc. (2014)
4. Hinkelmann, K., Pierfranceschi, A.: Combining process modelling and case modeling. In: Proceedings of the 8th International Conference on Methodologies, Technologies and Tools enabling e-Government MeTTeG14, Udine, pp. 83–95 (2014)
5. Koehler-Kruener, H., Chin, K., Hob, K.: Magic Quadrant for ECM 2015. Gartner Inc. (2015)