@article{PORMA_1966__25_1_114972,
     author = {Petrich, Mario},
     title = {The maximal matrix decomposition of a semigroup},
     journal = {Portugaliae mathematica},
     pages = {15--33},
     year = {1966},
     volume = {25},
     number = {1},
     mrnumber = {0209381},
     zbl = {0163.02101},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1966__25_1_114972/}
}