@misc{indiciaef2908a00593e,
  title = {Ion engine supporting research and evaluation. Volume 1: Materials studies},
  author = {Turk, R. R. and Mckee, W. E.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19780075951},
  note = {Source identifier: 19780075951}
}