@article{yu2013how,
  title = {How to Deal with Resource Productivity}
  author = {Yu Gan, Tianzhu Zhang, Sai Liang, Zhongnan Zhao, and Nan Li},
  journal = {Journal of Industrial Ecology},
  doi = {10.1111/j.1530-9290.2012.00547.x},
  year = {2013}
}