@misc{indiciae348bcdb50ec9,
  title = {Ion engine thrust vector study, phase 2 Quarterly report},
  author = {Amboss, K. and Brewer, G. R. and King, H. and Nudd, G. and Seliger, R.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690007459},
  note = {Source identifier: 19690007459}
}