INTRAKUL, J.; IAMPIBOONVATANA, S. Y. Retracting a ball in ℓ_1 onto its simple spherical cap. Topological Methods in Nonlinear Analysis, [S. l.], v. 63, n. 1, p. 115–129, 2024. DOI: 10.12775/TMNA.2024.005. Disponível em: https://apcz.umk.pl/TMNA/article/view/49535. Acesso em: 4 jul. 2024.