Meduna, Alexander, and Tomáš Kopeček. “Simple-Semi-Conditional Versions of Matrix Grammars With a Reduced Regulating Mechanism”. COMPUTING AND INFORMATICS 23, no. 3 (February 20, 2012): 287–302. Accessed May 2, 2024. https://www.cai.sk/ojs/index.php/cai/article/view/430.