@misc{indiciaee4d7641375e7,
  title = {Heat-operated cryogenic electrical generator},
  author = {Wang, T. G. and Saffren, M. M. and Elleman, D. D.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19750000116},
  note = {Source identifier: 19750000116}
}