@misc{indiciaec49b4475998f,
  title = {Technology needs for lunar and Mars space transfer systems},
  author = {Woodcock, Gordon R. and Cothran, Bradley C. and Donahue, Benjamin and Mcghee, Jerry},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910059531},
  note = {Source identifier: 19910059531}
}