@misc{indiciae8c019df1716a,
  title = {Spectrum orbit utilization program technical manual SOUP5 Version 3.8},
  author = {Davidson, J. and Ottey, H. R. and Sawitz, P. and Zusman, F. S.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19860017017},
  note = {Source identifier: 19860017017}
}