@article{kleemann2016gis-based,
  title = {GIS-based Analysis of Vienna's Material Stock in Buildings}
  author = {Kleemann, Fritz; Lederer, Jakob; Rechberger, Helmut; Fellner, Johann},
  journal = {Factor X: Challenges, Implementation Strategies and Examples for a Sustainable Use of Natural Resources},
  url = {http://doi.wiley.com/10.1111/jiec.12446},
  doi = {10.1111/jiec.12446},
  year = {2016}
}