WIŚNICKI, A. Hölder continuous retractions and amenable semigroups of uniformly Lipschitzian mappings in Hilbert spaces. Topological Methods in Nonlinear Analysis, [S. l.], v. 43, n. 1, p. 89–96, 2016. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2014.006. Acesso em: 25 apr. 2024.