@misc{indiciaef123fbfcba07,
  title = {An aircraft noise study in Norway},
  author = {Gjestland, Truls T. and Liasjo, Kare H. and Bohn, Hans Einar},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900015556},
  note = {Source identifier: 19900015556}
}