FOXBY, H.- bjorn. Gorenstein Modules and Related Modules. MATHEMATICA SCANDINAVICA, [S. l.], v. 31, p. 267–284, 1972. DOI: 10.7146/math.scand.a-11434. Disponível em: https://www.mscand.dk/article/view/11434. Acesso em: 5 may. 2024.