OGER, F. Cancellation of Abelian groups of finite rank modulo elementary equivalence. MATHEMATICA SCANDINAVICA, [S. l.], v. 67, p. 5–14, 1990. DOI: 10.7146/math.scand.a-12315. Disponível em: https://www.mscand.dk/article/view/12315. Acesso em: 29 apr. 2024.