@techreport{Hotker-2006-2327,
  author = {Hötker, H},
  title = {The impact of repowering of wind farms on birds and bats},
  institution = {Nature and Biodiversity Conservation Union (NABU)},
  year = {2006},
  month = {oct},
  url = {https://bergenhusen.nabu.de/imperia/md/images/bergenhusen/impact_of_repowering.pdf},
  keywords = {Wind Energy, Land-Based Wind, Bats, Birds},
}