HUGHES, Meri T.; JORGENSEN, David A.; SEGA, Liana M. Acyclic complexes of finitely generated free modules over local rings. MATHEMATICA SCANDINAVICA, [S. l.], v. 105, n. 1, p. 85–98, 2009. DOI: 10.7146/math.scand.a-15107. Disponível em: https://www.mscand.dk/article/view/15107. Acesso em: 6 dec. 2025.