@article{MZ_1964__85_170286,
     author = {Mario Petrich.},
     title = {The maximal semilattice decomposition of a semigroup.},
     journal = {Mathematische Zeitschrift},
     pages = {68--82},
     publisher = {mathdoc},
     volume = {85},
     year = {1964},
     zbl = {0124.25801},
     url = {http://geodesic.mathdoc.fr/item/MZ_1964__85_170286/}
}