Ban, Doan Van, and Dang Van Hung. “How Much Information of Concurrency Can Be Got from Firing Sequences in Petri Nets”. Journal of Computer Science and Cybernetics 8, no. 2 (April 28, 2016): 12–20. Accessed May 2, 2024. https://vjs.ac.vn/index.php/jcc/article/view/8268.