@misc{indiciae96ca38010e22,
  title = {Hall-Effect Thruster Utilizing Bismuth as Propellant},
  author = {Szabo, James and Gasdaska, Charles and Hruby, Vlad and Robin, Mike},
  year = {2008},
  url = {https://ntrs.nasa.gov/citations/20080047186},
  note = {Source identifier: 20080047186}
}