@misc{indiciaec1e285ef3894,
  title = {Technologies to improve ion propulsion system performance, life and efficiency for NEP},
  author = {Katz, I. and Brophy, J. R. and Anderson, J. R. and Polk, J. E. and Goebel, D. M.},
  year = {2003},
  url = {https://ntrs.nasa.gov/citations/20060028612},
  note = {Source identifier: 20060028612}
}