BJÖRNER, Anders; HIBI, Takayuki. Betti numbers of Buchsbaum complexes. Mathematica Scandinavica, Berkeley, CA, United States, v. 67, p. 193–196, 1990. DOI: 10.7146/math.scand.a-12331. Disponível em: https://journals.msp.org/mscand/article/view/1350. Acesso em: 24 jul. 2026.