@misc{indiciae089a0b0e501d,
  title = {Bremsstrahlung from electrons traversing a focused laser beam},
  author = {Billman, K. W. and Schappert, G. T.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700064607},
  note = {Source identifier: 19700064607}
}