@inbook{Betke-2014-1301,
  author = {Betke, K},
  title = {Underwater construction and operational noise at alpha ventus},
  chapter = {15},
  publisher = {Springer},
  year = {2014},
  month = {jan},
  booktitle = {Ecological Research at the Offshore Windfarm Alpha Ventus: Challenges, Results and Perspectives},
  pages = {171--180},
  url = {https://link.springer.com/chapter/10.1007/978-3-658-02462-8_15},
  keywords = {Wind Energy, Fixed Offshore Wind, Noise, Avoidance, Marine Mammals},
}