@misc{indiciaed0bc54c697ef,
  title = {Single-stage-to-orbit: Meeting the challenge},
  author = {Freeman, Delma C., Jr. and Talay, Theodore A. and Austin, Robert Eugene},
  year = {1995},
  url = {https://ntrs.nasa.gov/citations/19960003127},
  note = {Source identifier: 19960003127}
}