@article{robert2005what,
  title = {What is Sustainable Development? Goals, Indicators, Values, and Practice}
  author = {Robert, Kates W. and Parris, Thomas M. and Leiserowitz, Anthony A.},
  journal = {Environment: Science and Policy for Sustainable Development},
  url = {http://www.tandfonline.com/doi/abs/10.1080/00139157.2005.10524444},
  year = {2005}
}