@misc{indiciae9e9b65a80743,
  title = {ABTRAJ on-site tracking prediction program},
  author = {Berman, A. L. and Leppla, F. B.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690000103},
  note = {Source identifier: 19690000103}
}