Libardi, Alice Kimie Miwa, and Vladimir V. Sharko. “Functions and Vector Fields on C(CP^n)-Singular Manifolds”. Topological Methods in Nonlinear Analysis 46, no. 2 (December 1, 2015): 697–716. Accessed January 24, 2022. https://apcz.umk.pl/TMNA/article/view/TMNA.2015.081.