HOPE, R.; KATCHALSKI, M. Separating plane convex sets. MATHEMATICA SCANDINAVICA, [S. l.], v. 66, p. 44–46, 1990. DOI: 10.7146/math.scand.a-12291. Disponível em: https://www.mscand.dk/article/view/12291. Acesso em: 23 nov. 2024.