@misc{indiciaef0d035b13c52,
  title = {A Rocket Powered Single-Stage-to-Orbit Launch Vehicle With U.S. and Soviet Engineers},
  author = {MacConochie, Ian O. and Stnaley, Douglas O.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/20040161455},
  note = {Source identifier: 20040161455}
}