HUGHES, C. B.; TAYLOR, L. R. Bounded homeomorphisms over Hadamard manifolds. Mathematica Scandinavica, Berkeley, CA, United States, v. 73, p. 161–176, 1993. DOI: 10.7146/math.scand.a-12462. Disponível em: https://journals.msp.org/mscand/article/view/1205. Acesso em: 25 jul. 2026.