@misc{indiciaea69a5904cfed,
  title = {NASA's In-Space Propulsion Technology Program: A Step Toward Interstellar Exploration},
  author = {Johnson, Les and James, Bonnie and Baggett, Randy and Montgomery, Sandy},
  year = {2005},
  url = {https://ntrs.nasa.gov/citations/20050207391},
  note = {Source identifier: 20050207391}
}