@article{ortlepp2016material,
  title = {Material stocks in Germany's non-domestic buildings: a new quantification method}
  author = {Ortlepp, Regine and Gruhler, Karin and Schiller, Georg},
  journal = {Building Research & Information},
  url = {https://doi.org/10.1080/09613218.2016.1112096},
  year = {2016}
}