@article{xu2019a,
  title = {A mitigation simulation method for urban NOx emissions based on input-output analysis}
  author = {Xu, Xinli; Huang, Guohe; Liu, Lirong; Li, Jizhe; Zhai, Mengyu},
  journal = {Journal of Cleaner Production},
  url = {http://www.sciencedirect.com/science/article/pii/S0959652619342088},
  doi = {10.1016/j.jclepro.2019.119338},
  year = {2019}
}