Kühne, T. & Lange, A. (2020, October). Meaningful metrics for multi-level modelling. In Proceedings of the 23rd ACM/IEEE International Conference on Model Driven Engineering Languages and Systems: Companion Proceedings MODELS '20: ACM/IEEE 23rd International Conference on Model Driven Engineering Languages and Systems (pp. 1-9). ACM. https://doi.org/10.1145/3417990.3421412