@misc{indiciae12a1a9498a57,
  title = {Periodic motion around the triangular libration point in the restricted problem of four bodies.},
  author = {Carpenter, L. and Kolenkiewicz, R.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670048749},
  note = {Source identifier: 19670048749}
}