@misc{403,
  author = {Jens Geisler and Stefan Schrader and R. Bluhm and M. Petsche},
  title = {Windenergieanlagen mit verbesserter Leistungsreservenbereithaltung DE102013203540},
  year = {2014},
  chapter = {DE102013203540},
  month = {09*2014},
  publisher = {Senvion GmbH},
  address = {Germany},
}