@misc{indiciaed9323230bdeb,
  title = {Space environment facility for electric propulsion systems research},
  author = {Finke, R. C. and Holmes, A. D. and Keller, T. A.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19650013652},
  note = {Source identifier: 19650013652}
}