Adamenko, N.P. and Velichko, I.G. (2008) “Classification of topologies on finite sets using graphs”, Ukrains’kyi Matematychnyi Zhurnal, 60(7), pp. 992–996. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3215 (Accessed: 5 December 2025).