HEDENMALM, Hakan. A comparison between the closed modular ideals in $l^1(w)$ and $L^1(w)$. Mathematica Scandinavica, Berkeley, CA, United States, v. 58, p. 275–300, 1986. DOI: 10.7146/math.scand.a-12146. Disponível em: https://journals.msp.org/mscand/article/view/1488. Acesso em: 25 jul. 2026.