@misc{indiciae94df4b244f4d,
  title = {Maximum propellant utilization in an electron bombardment thruster},
  author = {Kaufman, H. R. and Cohen, A. J.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19720018952},
  note = {Source identifier: 19720018952}
}