@techreport{Tulp-1999-2629,
  author = {Tulp, I and Schekkerman, H and Larsen, J and van der Winden, J and van de Haterd, R and van Horssen, P and Dirksen, S and Spaans, A},
  title = {Nocturnal flight activity of sea ducks near the windfarm Tunø Knob in the Kattegat},
  institution = {Bureau Waardenburg bv},
  year = {1999},
  month = {dec},
  number = {99.64},
  keywords = {Wind Energy, Fixed Offshore Wind, Birds, Waterfowl},
}