@misc{indiciae9992da1a6adb,
  title = {Completely modular thermionic reactor ion propulsion system /trips/.},
  author = {Peelgren, M. L. and Kikin, G. M. and Sawyer, C. D.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720052511},
  note = {Source identifier: 19720052511}
}