BAIR, J. A propos d’un probleme de Klee sur la seperation de plusieurs ensembles. MATHEMATICA SCANDINAVICA, [S. l.], v. 38, p. 341–350, 1976. DOI: 10.7146/math.scand.a-11640. Disponível em: https://www.mscand.dk/article/view/11640. Acesso em: 28 apr. 2024.