@misc{indiciaef8a973cfb337,
  title = {Electric propulsion engine test chamber Patent},
  author = {Childs, J. H. and Grobman, J. and Rayle, W. D.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19700025528},
  note = {Source identifier: 19700025528}
}