@article{kampeng2016an,
  title = {An evaluation of the urban metabolism of Macao from 2003 to 2013}
  author = {Kampeng Lei and Lu Liu and Inchio Lou},
  journal = {Resources, Conservation and Recycling},
  doi = {10.1016/j.resconrec.2016.09.009},
  year = {2016}
}