@misc{indiciaeaf2a5e2197bf,
  title = {Characterization of colloid thruster beams},
  author = {Gamero-Castano, M. and Ziemer, J.},
  year = {2005},
  url = {https://ntrs.nasa.gov/citations/20060043015},
  note = {Source identifier: 20060043015}
}