@misc{indiciae165e4f8751ec,
  title = {Earth-mars trajectories, 1971, volume 4, part a},
  author = {Richard, R. J. and Roth, R. Y.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19650025701},
  note = {Source identifier: 19650025701}
}