@misc{indiciaec958930ea520,
  title = {Ion Propulsion Development Projects in US: Space Electric Rocket Test I to Deep Space 1},
  author = {Sovey, James S. and Rawlin, Vincent K. and Patterson, Michael J.},
  year = {2001},
  url = {https://ntrs.nasa.gov/citations/20010093217},
  note = {Source identifier: 20010093217}
}