@misc{indiciaebe7bbde0ee5e,
  title = {Experimental studies with a clustered ion engine system.},
  author = {Masek, T. D. and Womack, J. R.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670059998},
  note = {Source identifier: 19670059998}
}