@misc{indiciae86eb7f727c05,
  title = {Advanced thermionic cathodes for Kaufman thrusters.},
  author = {Gallagher, H. E. and Knauer, W.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670060200},
  note = {Source identifier: 19670060200}
}