@article{geng2014urban,
  title = {Urban ecological footprint analysis: a comparative study between Shenyang in China and Kawasaki in Japan}
  author = {Geng, Yong; Zhang, Liming; Chen, Xudong; Xue, Bing; Fujita, Tsuyoshi; Dong, Huijuan},
  journal = {Journal of Cleaner Production},
  url = {http://www.sciencedirect.com/science/article/pii/S0959652614003151},
  doi = {10.1016/j.jclepro.2014.03.082},
  year = {2014}
}