@misc{indiciae25494cc8297b,
  title = {Preliminary design for a space based orbital transfer vehicle},
  author = {Macconochie, I. O. and Rehder, J. J. and Brien, E. P.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19790050715},
  note = {Source identifier: 19790050715}
}