[1]
E. A. Bondar’, “Semigroups of Strong Endomorphisms of Infinite Graphs and Hypergraphs”, Ukr. Mat. Zhurn., vol. 65, no. 6, pp. 743–754, Jun. 2013, Accessed: Feb. 16, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2459