@misc{indiciae56d4c99fc6b9,
  title = {RE-1000 free-piston Stirling engine hydraulic output system description},
  author = {Schreiber, Jeffrey G. and Geng, Steven M.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19880001318},
  note = {Source identifier: 19880001318}
}