@misc{indiciae7d19b80b338f,
  title = {Optimal high- and low-thrust geocentric transfer},
  author = {Sackett, L. L. and Edelbaum, T. N.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740055066},
  note = {Source identifier: 19740055066}
}