@article{MZ_1977__153_172477,
     author = {Sudarshan K. Sehgal and H.J. Zassenhaus},
     title = {Group {Rings} {Whose} {Units} {Form} an {FC-Group.}},
     journal = {Mathematische Zeitschrift},
     pages = {29--36},
     publisher = {mathdoc},
     volume = {153},
     year = {1977},
     zbl = {0348.20004},
     url = {http://geodesic.mathdoc.fr/item/MZ_1977__153_172477/}
}