@article{UBHD-67985579,
  author={Dorn, Helen and T{\"o}rnros, Tobias and Zipf, Alexander},
  title={Quality evaluation of VGI using authoritative data},
  subtitle={a comparison with land use data in Southern Germany},
  year={2015},
  pages={1657-1671},
  language={eng},
  issn={2220-9964},
  volume={4},
  number={3},
  note={Gesehen am 19.05.2016},
  journal={ISPRS International Journal of Geo-Information},
  doi={10.3390/ijgi4031657},
}
@article{UBHD-67671675,
  author={Dorn, Helen and Vetter, Michael and H{\"o}fle, Bernhard},
  title={GIS-based roughness derivation for flood simulations},
  subtitle={ a comparison of orthophotos, LiDAR and crowdsourced geodata},
  year={2014},
  pages={1739-1759},
  language={eng},
  issn={2072-4292},
  volume={6},
  number={2},
  note={Gesehen am 09.09.2014},
  journal={Remote sensing},
  doi={10.3390/rs6021739},
  url={http://www.mdpi.com/2072-4292/6/2/1739},
  library={UB},
}
@article{UBHD-68094652,
  author={Reichert, Markus and T{\"o}rnros, Tobias and Dorn, Helen and Salize, Hans Joachim and Meyer-Lindenberg, Andreas and Zipf, Alexander},
  title={Using ambulatory assessment for experience sampling and the mapping of environmental risk factors in everyday life},
  year={2016},
  pages={94-102},
  language={ger},
  issn={1614-4864},
  volume={13},
  journal={Die Psychiatrie},
}
@article{UBHD-68058355,
  author={T{\"o}rnros, Tobias and Dorn, Helen and Salize, Hans Joachim and Meyer-Lindenberg, Andreas and Zipf, Alexander},
  title={A comparison of temporal and location-based sampling strategies for global positioning system-triggered electronic diaries},
  year={2016},
  language={eng},
  issn={1970-7096},
  volume={11(2016) Artikel-Nummer 473},
  number={7 Seiten},
  note={Gesehen am 02.12.2016},
  journal={Geospatial health},
  doi={10.4081/gh.2016.473},
  url={http://dx.doi.org/10.4081/gh.2016.473},
  library={UB},
}