D. Batory. Generative and Transformational Techniques in Software Engineering, volume 4143 of Lecture Notes in Computer Science, page 3--35. Springer, (2006)
D. Ancona, M. Ancona, A. Cuni, and N. Matsakis. DLS '07: Proceedings of the 2007 symposium on Dynamic languages, page 53--64. New York, NY, USA, ACM, (2007)