@article{MZ_1958__70_169772,
     author = {H.K. Farahat and L. Mirsky},
     title = {Group {Membership} in {Rings} of {Various} {Types.}},
     journal = {Mathematische Zeitschrift},
     pages = {231--244},
     publisher = {mathdoc},
     volume = {70},
     year = {1958},
     zbl = {0082.25302},
     url = {http://geodesic.mathdoc.fr/item/MZ_1958__70_169772/}
}