SATHER-WAGSTAFF, Sean; WHITE, Diana. An Euler characteristic for modules of finite G-dimension. Mathematica Scandinavica, Berkeley, CA, United States, v. 102, n. 2, p. 206–230, 2008. DOI: 10.7146/math.scand.a-15059. Disponível em: https://journals.msp.org/mscand/article/view/638. Acesso em: 24 jul. 2026.