@misc{indiciae52b56c8978fe,
  title = {Space and transatmospheric propulsion technology},
  author = {Merkle, Charles and Stangeland, Maynard L. and Brown, James R. and Mccarty, John P. and Povinelli, Louis A. and Northam, G. Burton and Zukoski, Edward E.},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19940031540},
  note = {Source identifier: 19940031540}
}