OstrovskiiV. L. (2004) “Representation of an algebra associated with the Dynkin graph $\tilde E_7$”, Ukrains’kyi Matematychnyi Zhurnal, 56(9), pp. 1193–1202. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3835 (Accessed: 24November2024).