@misc{indiciae2f3b43aa54e4,
  title = {NASP - Enabling new space launch options},
  author = {Froning, David and Gaubatz, William and Mathews, George},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910038263},
  note = {Source identifier: 19910038263}
}