@misc{indiciae5a40a15818e6,
  title = {5-kWe Free-piston Stirling Engine Convertor},
  author = {Chapman, Peter A. and Vitale, Nicholas A. and Walter, Thomas J.},
  year = {2008},
  url = {https://ntrs.nasa.gov/citations/20080012733},
  note = {Source identifier: 20080012733}
}