@article{dias2014environmentally,
  title = {Environmentally extended input–output analysis on a city scale – application to Aveiro (Portugal)}
  author = {Dias, Ana Cláudia; Lemos, Diogo; Gabarrell, Xavier; Arroja, Luís},
  journal = {Journal of Cleaner Production},
  url = {http://www.sciencedirect.com/science/article/pii/S095965261400359X},
  doi = {10.1016/j.jclepro.2014.04.012},
  year = {2014}
}