@misc{1156161,
  author = {J H Crary},
  title = {Extension of programs for calculations of great circle paths and sunrise-sunset times.:},
  year = {1965},
  month = {1965-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.TN.303},
  language = {en},
}