@misc{indiciaef4a43fbbdd39,
  title = {Surface modification using low energy ground state ion beams},
  author = {Chutjian, Ara and Hecht, Michael H. and Orient, Otto J.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910005500},
  note = {Source identifier: 19910005500}
}