@misc{indiciae0ec37af305fa,
  title = {Field Emitter Cathodes and Electric Propulsion Systems},
  author = {Marrese, C. and Polk, J. and Mueller, J.},
  year = {2000},
  url = {https://ntrs.nasa.gov/citations/20060032743},
  note = {Source identifier: 20060032743}
}