@misc{indiciaea477bd2ef2c9,
  title = {Air traffic control by distributed management in a MLS environment},
  author = {Kreifeldt, J. G. and Parkin, L. and Hart, S.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19790009328},
  note = {Source identifier: 19790009328}
}