Mirenghi, Elvira, and Maria Tucci. “Some Existence Results for Dynamical Systems on Non-Complete Riemannian Manifolds”. Topological Methods in Nonlinear Analysis 13, no. 1 (March 1, 1999): 163–180. Accessed July 22, 2024. https://apcz.umk.pl/TMNA/article/view/TMNA.1999.008.