@article{MS2_1998__81_2_167428,
     author = {Gert K. Pedersen and Lawrence G. Brown},
     title = {Approximation and convex decomposition by extremals in a {C*-algebra.}},
     journal = {Mathematica Scandinavica},
     pages = {69--85},
     publisher = {mathdoc},
     volume = {81},
     number = {2},
     year = {1998},
     zbl = {0898.46051},
     url = {http://geodesic.mathdoc.fr/item/MS2_1998__81_2_167428/}
}