ZANARDO, Paolo. The Krull-Schmidt theorem for categories of finitely generated modules over valuation domains. Mathematica Scandinavica, Berkeley, CA, United States, v. 66, p. 5–11, 1990. DOI: 10.7146/math.scand.a-12286. Disponível em: https://journals.msp.org/mscand/article/view/1337. Acesso em: 25 jul. 2026.