@misc{indiciae1173300312cc,
  title = {Electron beam flow visualization in hypersonic helium flow.},
  author = {Henderson, A., Jr. and Ocheltree, S. L. and Wagner, R. D., Jr. and Weinstein, L. M.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690057733},
  note = {Source identifier: 19690057733}
}