@article {21919,
	title = {Measurement of aerosol optical properties and their potential source origin in urban Beijing from 2013-2017},
	journal = {Atmospheric EnvironmentAtmospheric Environment},
	volume = {206},
	year = {2019},
	pages = {293-302},
	edition = {12 March 2019},
	chapter = {293},
	author = {T. Wang and Du, Z. and Tan, T. and Xu, N. and Hu, M. and J. Hu and Guo, S.}
}
