Zhang Shuyi, Guo Bin, Dong Anlan, He Jing, Xu Ziping and Chen Song Xi . 2017 Cautionary tales on air-quality improvement in Beijing. Proc. R. Soc. A. 473: 20170457. 20170457. http://doi.org/10.1098/rspa.2017.0457
or
@article{zhang2017airquality,
title={Cautionary tales on air-quality improvement in Beijing},
author={Shuyi Zhang and Bin Guo and Anlan Dong and Jing He and Ziping Xu and Song Xi Chen},
journal={Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences},
year={2017},
volume={473},
url={https://api.semanticscholar.org/CorpusID:37683936}
}