PLAKHTA , L. P. Sets of singular points of actions of finite groups by $(S^n)^k$. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 44, n. 9, p. 1233–1238, 1992. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8175. Acesso em: 5 dec. 2025.