@article{10_4064__26_1_55_63,
     author = {S. Montgomery},
     title = {A generalized {Picard} group for prime rings},
     journal = {Banach Center Publications},
     pages = {55--63},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {1990},
     doi = {10.4064/-26-1-55-63},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/-26-1-55-63/}
}