@misc{indiciae92e889b00181,
  title = {Solar Electric Propulsion for Future NASA Missions},
  author = {Landis, Geoffrey A. and Oleson, Steven R. and Mercer, Carolyn R.},
  year = {2015},
  url = {https://ntrs.nasa.gov/citations/20160004088},
  note = {Source identifier: 20160004088}
}