@article{GDZPPN001253115,
title = {Semilattices of width 3 whose decomposable elements form a chain.},
journal = {Semigroup forum},
volume = {18},
year = {1979},
pages = {201-240},
zbl = {0408.06001},
url = {http://dml.mathdoc.fr/item/GDZPPN001253115}
}
Sirjaev, V.M. Semilattices of width 3 whose decomposable elements form a chain.. Semigroup forum, Tome 18 (1979) pp. 201-240. http://gdmltest.u-ga.fr/item/GDZPPN001253115/