@misc{indiciaec16d52fa2342,
  title = {A vacuum ultraviolet photoionization detector},
  author = {Hennes, J. P. and Scolnik, R. and Stober, A. K.},
  year = {1963},
  url = {https://ntrs.nasa.gov/citations/19640004944},
  note = {Source identifier: 19640004944}
}