FOSSUM, Robert M. The structure of indecomposable injective modules. MATHEMATICA SCANDINAVICA, [S. l.], v. 36, p. 291–312, 1975. DOI: 10.7146/math.scand.a-11579. Disponível em: https://tidsskrift.dk/math/article/view/11579. Acesso em: 13 aug. 2026.