@misc{indiciaeeea91b1b40d6,
  title = {Thermal investigation of an ion engine microthrustor},
  author = {Briehl, D. C. and Stevens, N. J.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19680001028},
  note = {Source identifier: 19680001028}
}