@Article{acp-9-909-2009,
AUTHOR = {Schaap, M. and Apituley, A. and Timmermans, R. M. A. and Koelemeijer, R. B. A. and de Leeuw, G.},
TITLE = {Exploring the relation between aerosol optical depth and PM$_{2.5}$ at Cabauw, the Netherlands},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {9},
YEAR = {2009},
NUMBER = {3},
PAGES = {909--925},
URL = {http://www.atmos-chem-phys.net/9/909/2009/},
DOI = {10.5194/acp-9-909-2009}
}