Kerkouche, Elhillali, and Allaoua Chaou. 2009. “A Graphical Tool Support to Process and Simulate ECATNets Models Based on Meta-Modelling and Graph Grammars”. INFOCOMP Journal of Computer Science 8 (4):37-44. http://177.105.60.18/index.php/infocomp/article/view/280.