@misc{indiciaed58fca3c5268,
  title = {New 5 Kilowatt Free-Piston Stirling Space Convertor Developments},
  author = {Brandhorst, Henry W.},
  year = {2007},
  url = {https://ntrs.nasa.gov/citations/20070010745},
  note = {Source identifier: 20070010745}
}