@misc{indiciaed8895f05e76c,
  title = {Hybrid propulsion technology program: Phase 1, volume 1},
  author = {Schuler, A. L. and Wiley, D. R.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19910000798},
  note = {Source identifier: 19910000798}
}