CONCA, A.; TRUNG, N. V.; VALLA, G. Koszul property for points in projective spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 89, n. 2, p. 201–216, 2001. DOI: 10.7146/math.scand.a-14338. Disponível em: https://www.mscand.dk/article/view/14338. Acesso em: 17 jan. 2022.