A. Rosà, L. Chen, and W. Binder. Proceedings of the 2016 ACM SIGPLAN International Conference on Generative Programming: Concepts and Experiences, page 36--46. ACM, (2016)
M. Tang, M. Kao, and M. Chen. METRICS '99: Proceedings of the 6th International Symposium on Software Metrics, Washington, DC, USA, IEEE Computer Society, (1999)