@article{127,
  author = {Stephen Wittkopf and Lars Grobe},
  title = {Planungshilfe für solare Fassaden},
  year = {2013},
  journal = {Bau & Architektur},
  chapter = {29},
  month = {06/2013},
  url = {http://www.swissengineering-stz.ch/pdf/bua0220135971.pdf},
  language = {eng},
}