@misc{indiciae0e6f62352cd8,
  title = {An improved thermionic power conversion system for space propulsion},
  author = {Hsieh, T. M. and Phillips, W. M.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19790026205},
  note = {Source identifier: 19790026205}
}