@article {PMID:25639123,
	title = {Research progress and direction of atmospheric brown carbon},
	journal = {Environmental Science},
	volume = {35},
	number = {11},
	year = {2014},
	month = {November},
	pages = {4404{\textemdash}4414},
	issn = {0250-3301},
	url = {http://europepmc.org/abstract/MED/25639123},
	author = {Caiqing Yan and Mei* Zheng and Yuanhang Zhang}
}
