@article{1ab76450e5d747878972bce48913d7f6,
title = "Comparison of ambient airborne PM2.5, PM2.5 absorbance and nitrogen dioxide ratios measured in 1999 and 2009 in three areas in Europe",
author = "J. Durant and R. Beelen and M. Eeftens and C. Meliefste and J. Cyrys and J. Heinrich and T. Bellander and M. Lewne and B. Brunekreef and G. Hoek",
year = "2014",
language = "English",
volume = "487",
pages = "290--298",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier",
}