@Article{acp-18-5607-2018,
AUTHOR = {Ma, Y. and Cheng, Y. and Qiu, X. and Cao, G. and Fang, Y. and Wang, J. and Zhu, T. and Yu, J. and Hu, D.},
TITLE = {Sources and oxidative potential of water-soluble humic-like substances
(HULIS$_\mathrm{WS}$) in fine particulate matter (PM$_{2.5}$) in Beijing},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {18},
YEAR = {2018},
NUMBER = {8},
PAGES = {5607--5617},
URL = {https://acp.copernicus.org/articles/18/5607/2018/},
DOI = {10.5194/acp-18-5607-2018}
}