Boronat, Artur, and Reiko Heckel. “Preface of the Post-Proceedings of the 8th International Workshop on Graph Transformation and Visual Modeling Techniques”. Electronic Communications of the EASST 18 (September 24, 2009). Accessed August 13, 2025. https://www.eceasst.org/index.php/eceasst/article/view/1551.