@misc{indiciae086d2a3c1112,
  title = {Variable specific impulse high power ion thruster},
  author = {Goebel, Dan M. and Brophy, John R. and Polk, James E. and Katz, Ira and Anderson, John},
  year = {2005},
  url = {https://ntrs.nasa.gov/citations/20060042838},
  note = {Source identifier: 20060042838}
}