@misc{indiciaeab43cb0280af,
  title = {Automatic control systems for ion engines.},
  author = {Forrester, A. T. and Purmal, G. W. and Schneider, A. M. and Sohl, G. and Worlock, R. M.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19650038275},
  note = {Source identifier: 19650038275}
}