@article{10_4064_fm174_3_4,
     author = {S. V. Butler},
     title = {Density in the space of topological measures},
     journal = {Fundamenta Mathematicae},
     pages = {239--251},
     publisher = {mathdoc},
     volume = {174},
     number = {3},
     year = {2002},
     doi = {10.4064/fm174-3-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm174-3-4/}
}