@misc{indiciaec23ef5ff03be,
  title = {Options for a 30 kWe SP-100 flight demonstration},
  author = {Vondra, Robert J. and Deininger, William D.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890059580},
  note = {Source identifier: 19890059580}
}