Varjú, E. Csuhaj, J. Kelemen, and Gh. Paun. “Grammar Systems With WAvE-Like Communication”. COMPUTING AND INFORMATICS 15, no. 5 (March 5, 2012): 419–436. Accessed February 28, 2024. https://www.cai.sk/ojs/index.php/cai/article/view/684.