Ivanov, Boris N. “Mathematical Model and Algorithm for Calculating the Cycles of the Cells of the Graph Map”. Numerical Methods and Programming (Vychislitel’nye Metody i Programmirovanie) 22, no. 70 (November 30, 2021): 294–305. Accessed April 25, 2024. https://en.num-meth.ru/index.php/journal/article/view/1173.