@misc{indiciae9b848281f44e,
  title = {Extended performance solar electric propulsion thrust system study. Volume 4: Thruster technology evaluation},
  author = {Poeschel, R. L. and Hawthorne, E. I. and Weisman, Y. C. and Frisman, M. and Benson, G. C. and Mcgrath, R. J. and Martinelli, R. M. and Linsenbardt, T. L. and Beattie, J. R.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780008147},
  note = {Source identifier: 19780008147}
}