@misc{indiciae7e9d2365fa35,
  title = {A method for computing extremal maximum-range thrust-limited rocket trajectories with application to lunar transport},
  author = {Armstrong, E. S. and Childs, A. G. and Markos, A. T.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700029217},
  note = {Source identifier: 19700029217}
}