@misc{indiciaec2368fe3f5a8,
  title = {Advanced Controller for the Free-Piston Stirling Convertor},
  author = {Gerber, Scott S. and Jamison, Mike and Roth, Mary Ellen and Regan, Timothy F.},
  year = {2004},
  url = {https://ntrs.nasa.gov/citations/20050205653},
  note = {Source identifier: 20050205653}
}