@article{lou2015emergy-based,
  title = {Emergy-based indicators of regional environmental sustainability: A case study in Shanwei, Guangdong, China}
  author = {Lou, Bo; Qiu, Yonghai; Ulgiati, Sergio},
  journal = {Ecological Indicators},
  url = {http://www.sciencedirect.com/science/article/pii/S1470160X15001417},
  doi = {10.1016/j.ecolind.2015.03.017},
  year = {2015}
}