@misc{indiciaeb1b69a02a034,
  title = {Booster engines derived from the Space Shuttle Main Engine},
  author = {Sobin, A. J. and Poynor, S. P. and Cross, E.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770059130},
  note = {Source identifier: 19770059130}
}