HANSEN, S. A Generalization of a Theorem of Sylvester on the Lines Determined by a Finite Point Set. MATHEMATICA SCANDINAVICA, [S. l.], v. 16, p. 175–180, 1965. DOI: 10.7146/math.scand.a-10758. Disponível em: https://www.mscand.dk/article/view/10758. Acesso em: 3 may. 2024.