@misc{indiciae5ff6a7e75ae5,
  title = {A multiple-impulse function for orbital transfer and its derivatives},
  author = {Kibler, J. F. and Hoffman, L. H.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720012221},
  note = {Source identifier: 19720012221}
}