@misc{indiciaecb61445d2b06,
  title = {EXPERIMENTAL PERFORMANCE OF AN ION ROCKET ENGINE USING A RECTANGULAR-SLAB POROUS-TUNGSTEN EMITTER},
  author = {Cybulski, R. J. and Kotnik, J. T. and Lockwood, D. L.},
  year = {1962},
  url = {https://ntrs.nasa.gov/citations/19630000453},
  note = {Source identifier: 19630000453}
}