GEHRKE, Mai; JÓNSSON, Bjarni. Bounded distributive lattice expansions. Mathematica Scandinavica, Berkeley, CA, United States, v. 94, n. 1, p. 13–45, 2004. DOI: 10.7146/math.scand.a-14428. Disponível em: https://journals.msp.org/mscand/article/view/791. Acesso em: 24 jul. 2026.