Balanov, Z. and Brodsky, S. (1995) “On the genus of some subsets of $G$-spheres”, Topological Methods in Nonlinear Analysis, 5(1), pp. 101–110. Available at: https://apcz.umk.pl/TMNA/article/view/TMNA.1995.006 (Accessed: 22 July 2024).