GOVER, Eugene; RAGUSA, Alfio. Koszul complexes with isomorphic homology. Mathematica Scandinavica, Berkeley, CA, United States, v. 60, p. 39–51, 1987. DOI: 10.7146/math.scand.a-12170. Disponível em: https://journals.msp.org/mscand/article/view/1460. Acesso em: 25 jul. 2026.