KIRICHENKO, A. A.; SAMOILENKO, Yu. S.; TYMOSHKEVYCH, L. M. Structure of the Systems of Orthogonal Projections Connected with Countable Coxeter Trees. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 66, n. 9, p. 1185–1192, 2014. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2209. Acesso em: 11 apr. 2025.