FAN, Chun-tak. Growth of Betti Numbers over Noetherian Local Rings. Mathematica Scandinavica, Berkeley, CA, United States, v. 75, p. 161–168, 1994. DOI: 10.7146/math.scand.a-12511. Disponível em: https://journals.msp.org/mscand/article/view/1163. Acesso em: 24 jul. 2026.