@Article{acp-9-4957-2009,
AUTHOR = {Heo, J.-B. and Hopke, P. K. and Yi, S.-M.},
TITLE = {Source apportionment of PM$_{2.5}$ in Seoul, Korea},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {9},
YEAR = {2009},
NUMBER = {14},
PAGES = {4957--4971},
URL = {http://www.atmos-chem-phys.net/9/4957/2009/},
DOI = {10.5194/acp-9-4957-2009}
}