@misc{indiciaea39c691c8a39,
  title = {Ion engine thrust vector study},
  author = {Amboss, K. and Brewer, G. R. and Kami, S. and King, H. and Nudd, G. and Seliger, R.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680012475},
  note = {Source identifier: 19680012475}
}