JÄRVENPÄÄ, E.; JÄRVENPÄÄ, M.; KÄENMÄKI, A.; SUOMALA, V. Asymptotically sharp dimension estimates for $k$-porous sets. Mathematica Scandinavica, Berkeley, CA, United States, v. 97, n. 2, p. 309–318, 2005. DOI: 10.7146/math.scand.a-14978. Disponível em: https://journals.msp.org/mscand/article/view/719. Acesso em: 24 jul. 2026.