BELIGIANNIS, Apostolos. Homotopy theory of modules and Gorenstein rings. MATHEMATICA SCANDINAVICA, [S. l.], v. 89, n. 1, p. 5–45, 2001. DOI: 10.7146/math.scand.a-14329. Disponível em: https://tidsskrift.dk/math/article/view/14329. Acesso em: 14 aug. 2026.