@misc{indiciae1dd4e9715b70,
  title = {Planning Orbiter Flights},
  author = {Harris, H. M. and Bergam, M. J. and Kim, S. L. and Smith, E. A.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870000020},
  note = {Source identifier: 19870000020}
}