SOKHATS’KYI, F. M. On Isotopes of Groups. III. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 48, n. 2, p. 251–259, 1996. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5352. Acesso em: 14 apr. 2025.