@Article{amtd-2-237-2009,
AUTHOR = {Engstr\"om, J. E. and Leck, C.},
TITLE = {Determination of water-insoluble light absorbing matter in rainwater using polycarbonate membrane filters and photometric detection},
JOURNAL = {Atmospheric Measurement Techniques Discussions},
VOLUME = {2},
YEAR = {2009},
PAGES = {237--264},
URL = {https://amt.copernicus.org/preprints/2/237/2009/},
DOI = {10.5194/amtd-2-237-2009}
}