@article{MOMA_1996__121_3_178732,
     author = {B.A.F. Wehrfritz},
     title = {Cofinitary and {Contrafinitary} {Linear} {Groups.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {391--398},
     year = {1996},
     volume = {121},
     number = {3},
     zbl = {0848.20042},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1996__121_3_178732/}
}