FAN, K. A Covering Property of Simplexes. MATHEMATICA SCANDINAVICA, [S. l.], v. 22, p. 17–20, 1968. DOI: 10.7146/math.scand.a-10867. Disponível em: https://www.mscand.dk/article/view/10867. Acesso em: 4 may. 2024.