@article{10_4064_cm_72_2_325_334,
     author = {Gene Abrams and Jeremy Haefner},
     title = {Bounded {Picard} groups},
     journal = {Colloquium Mathematicum},
     pages = {325--334},
     publisher = {mathdoc},
     volume = {72},
     number = {2},
     year = {1997},
     doi = {10.4064/cm-72-2-325-334},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-72-2-325-334/}
}