M. Ahat, S. Amor, M. Bui, M. Lamure, and M. Courel. Complex (1), volume 4 of Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, page 225-231. Springer, (2009)
Y. Hoareau, M. Ahat, D. Medernach, and M. Bui. EGC, volume RNTI-E-20 of Revue des Nouvelles Technologies de l'Information, page 275-278. Hermann-Éditions, (2011)