@article {YAN2015199,
	title = {Commuter exposure to particulate matter and particle-bound PAHs in three transportation modes in Beijing, China},
	journal = {Environmental Pollution},
	volume = {204},
	year = {2015},
	pages = {199 - 206},
	keywords = {Walking},
	issn = {0269-7491},
	doi = {http://dx.doi.org/10.1016/j.envpol.2015.05.001},
	url = {http://www.sciencedirect.com/science/article/pii/S0269749115002171},
	author = {Caiqing Yan and Mei* Zheng and Qiaoyun Yang and Qunfang Zhang and Xinghua Qiu and Yanjun Zhang and Huaiyu Fu and Xiaoying Li and Zhu, Tong and Yifang Zhu}
}
