PALYUTKIN, V. G. Lie-Kac bigroups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 52, n. 5, p. 658–666, 2000. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4460. Acesso em: 5 dec. 2025.