GODEFROY, Gilles; SAAB, Paulette. Weakly unconditionally convergent series in M-ideals. Mathematica Scandinavica, Berkeley, CA, United States, v. 64, p. 307–318, 1989. DOI: 10.7146/math.scand.a-12260. Disponível em: https://journals.msp.org/mscand/article/view/1390. Acesso em: 24 jul. 2026.