@misc{indiciae2d0c0cf516ff,
  title = {Trajectory requirements for comet rendezvous},
  author = {Friedlander, A. L. and Niehoff, J. C. and Waters, J. I.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700062769},
  note = {Source identifier: 19700062769}
}