SCRIVANTI, Susana. Homological Dimension of Pullbacks. MATHEMATICA SCANDINAVICA, [S. l.], v. 71, p. 5–15, 1992. DOI: 10.7146/math.scand.a-12406. Disponível em: https://tidsskrift.dk/math/article/view/12406. Acesso em: 14 aug. 2026.