YAKYMENKO, D. Yu. Unitarization of representations of a partially ordered set associated with a graph $\tilde{E}_6$. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 61, n. 10, p. 1424–1433, 2009. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3111. Acesso em: 5 dec. 2025.