KEITH, Stephen; RAJALA, Kai. A remark on Poincaré inequalities on metric measure spaces. Mathematica Scandinavica, Berkeley, CA, United States, v. 95, n. 2, p. 299–304, 2004. DOI: 10.7146/math.scand.a-14461. Disponível em: https://journals.msp.org/mscand/article/view/758. Acesso em: 24 jul. 2026.