HÀ, Tài Huy; HIBI, Takayuki. Resolution and Betti numbers of vertex cover ideals. Mathematica Scandinavica, Berkeley, CA, United States, v. 131, n. 3, 2025. DOI: 10.7146/math.scand.a-158301. Disponível em: https://journals.msp.org/mscand/article/view/10. Acesso em: 24 jul. 2026.