@article {17387,
	title = {Insight into characteristics and sources of PM2.5 in the Beijing-Tianjin-Hebei region, China},
	journal = { National Science Review},
	volume = {2},
	number = {3},
	year = {2015},
	pages = {257-258},
	author = {Min Hu and Song Guo and Peng, JianFei and Zhijun Wu}
}
