@article{JRAM_1995__469_153772,
     author = {Gert K. Pedersen and L.G. Brown},
     title = {On the geometry of the unit ball of a {C*-} algebra.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {113--148},
     year = {1995},
     volume = {469},
     zbl = {0834.46041},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1995__469_153772/}
}