@article{PORMA_1959__18_1_114809,
     author = {Conrad, Paul},
     title = {Generalized semigroup rings - {II}},
     journal = {Portugaliae mathematica},
     pages = {33--53},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {1959},
     mrnumber = {0113921},
     zbl = {0090.02102},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1959__18_1_114809/}
}