BAIR, J. A propos d’un probleme de Klee sur la seperation de plusieurs ensembles. Mathematica Scandinavica, Berkeley, CA, United States, v. 38, p. 341–350, 1976. DOI: 10.7146/math.scand.a-11640. Disponível em: https://journals.msp.org/mscand/article/view/2008. Acesso em: 25 jul. 2026.