BREZEZINSKI, J. Th normal decomposition of lattices and the Krull-Schmidt theorem. MATHEMATICA SCANDINAVICA, [S. l.], v. 37, p. 40–50, 1975. DOI: 10.7146/math.scand.a-11586. Disponível em: https://www.mscand.dk/article/view/11586. Acesso em: 7 may. 2024.