PLAKHTA , L. P. Cohomological correlations for sets of singular points of the actions of $Z/4$ group by $(S^n)^k$. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 44, n. 7, p. 991–995, 1992. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8133. Acesso em: 6 dec. 2025.