@Article{acp-6-729-2006,
AUTHOR = {Graber, E. R. and Rudich, Y.},
TITLE = {Atmospheric HULIS: How humic-like are they? A comprehensive and critical review},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {6},
YEAR = {2006},
NUMBER = {3},
PAGES = {729--753},
URL = {http://www.atmos-chem-phys.net/6/729/2006/},
DOI = {10.5194/acp-6-729-2006}
}