@misc{indiciae3ee0bf62ce61,
  title = {Gravity-assisted trajectories for unmanned space exploration},
  author = {Edgecombe, D. S. and Luce, R. G. and Porter, R. F.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19660003798},
  note = {Source identifier: 19660003798}
}