@article {Song_Shao_Liu_Lu_Kuster_Goldan_Xie_2007,
	title = {Source Apportionment of Ambient Volatile Organic Compounds in Beijing},
	journal = {ENVIRONMENTAL SCIENCE \&amp; TECHNOLOGY},
	volume = {41},
	number = {12},
	year = {2007},
	pages = {4348-4353},
	author = {Yu Song and Min Shao and Ying Liu and Sihua Lu and Kuster, William and Goldan, Paul and Shaodong Xie}
}
