@misc{indiciae3315922e5c19,
  title = {Study of the X rays produced by a vacuum spark.},
  author = {Cohen, L. and Feldman, U. and Swartz, M. and Underwood, J. H.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680050593},
  note = {Source identifier: 19680050593}
}