@misc{indiciaeb37cc9ddc9ec,
  title = {Interplanetary Sample Return Missions Using Radioisotope Electric Propulsion},
  author = {Williams, R. and Gao, Y. and Kluever, C. A. and Capples, M. and Belcher, J.},
  year = {2005},
  url = {https://ntrs.nasa.gov/citations/20050203979},
  note = {Source identifier: 20050203979}
}