@article{PORMA_1960__19_3_114839,
     author = {Luh, Jiang},
     title = {On the concepts of radical of semigroup having {Kernel}},
     journal = {Portugaliae mathematica},
     pages = {189--198},
     publisher = {mathdoc},
     volume = {19},
     number = {3},
     year = {1960},
     mrnumber = {0131482},
     zbl = {0095.01405},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1960__19_3_114839/}
}