@article {xie2017JCP,
	title = {Impacts of SO2 taxations and renewable energy development on CO2, NOx and SO2 emissions in Jing-Jin-Ji region},
	journal = {Journal of Cleaner Productions},
	volume = {171},
	year = {2018},
	pages = {1386-1395},
	url = {http://www.sciencedirect.com/science/article/pii/S0959652617323508},
	author = {Yang Xie and Hancheng Dai* and Dong, Huijuan}
}
