Karatkevich, Andrei, and Grzegorz Andrzejewski. “HIERARCHICAL DECOMPOSITION OF PETRI NETS FOR ANALYSIS AND DESIGN OF DIGITAL MICROSYSTEMS”. International Journal of Computing 5, no. 1 (August 1, 2014): 18-25. Accessed May 23, 2025. https://www.computingonline.net/computing/article/view/376.