Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{SF_1979__17_134319, author = {V.M. Sirjaev}, title = {Semilattices of width 3 whose decomposable elements form a chain.}, journal = {Semigroup forum}, pages = {201--240}, publisher = {mathdoc}, volume = {17}, year = {1979}, zbl = {0408.06001}, url = {http://geodesic.mathdoc.fr/item/SF_1979__17_134319/} }
V.M. Sirjaev. Semilattices of width 3 whose decomposable elements form a chain.. Semigroup forum, Tome 17 (1979), pp. 201-240. http://geodesic.mathdoc.fr/item/SF_1979__17_134319/