@misc{1170241,
  author = {L S Joel and J J Filliben and G B Hare},
  title = {Approaches to evaluating the effects of VFR towers on flow and safety at airports:},
  year = {1971},
  month = {1971-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.RPT.10562},
  language = {en},
}