@misc{indiciae087a3676ce82,
  title = {Application of ion thruster technology to a 30-cm multipole sputtering ion source},
  author = {Robinson, R. S. and Kaufman, H. R.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19770030153},
  note = {Source identifier: 19770030153}
}