@Article{acp-11-4679-2011,
AUTHOR = {Murphy, D. M. and Chow, J. C. and Leibensperger, E. M. and Malm, W. C. and Pitchford, M. and Schichtel, B. A. and Watson, J. G. and White, W. H.},
TITLE = {Decreases in elemental carbon and fine particle mass in the United States},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {11},
YEAR = {2011},
NUMBER = {10},
PAGES = {4679--4686},
URL = {http://www.atmos-chem-phys.net/11/4679/2011/},
DOI = {10.5194/acp-11-4679-2011}
}