BONDESEN, A.; BRONSTED, A. A dual proof of the upper bound conjecture for convex polytopes. MATHEMATICA SCANDINAVICA, [S. l.], v. 46, p. 95–102, 1980. DOI: 10.7146/math.scand.a-11854. Disponível em: https://www.mscand.dk/article/view/11854. Acesso em: 24 nov. 2024.