IVANENKO, N. L. Normal structure of the jonquere group over a field of characteristic zero. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 46, n. 6, p. 692–698, 1994. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5696. Acesso em: 6 dec. 2025.