@article{SF_1988__37_1_134916,
     author = {Sidney S. Mitchell and Paul B. Fenoglio},
     title = {Congruence-free commutative semirings.},
     journal = {Semigroup forum},
     pages = {79--92},
     publisher = {mathdoc},
     volume = {37},
     number = {1},
     year = {1988},
     zbl = {0636.16020},
     url = {http://geodesic.mathdoc.fr/item/SF_1988__37_1_134916/}
}