@misc{indiciaeeeb260329625,
  title = {Nuclear radiation problems, unmanned thermionic reactor ion propulsion spacecraft},
  author = {Mondt, J. F. and Sawyer, C. D. and Nakashima, A.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720009989},
  note = {Source identifier: 19720009989}
}