@misc{indiciae2d8d0652cea7,
  title = {Low Energy Sputtering Experiments for Ion Engine Lifetime Assessment},
  author = {Duchemin Olivier B. and Polk, James E.},
  year = {1999},
  url = {https://ntrs.nasa.gov/citations/20000052458},
  note = {Source identifier: 20000052458}
}