@misc{indiciae03039d778b6b,
  title = {Double-discharge copper-vapor laser},
  author = {Chen, C. J. and Merheim, N. M. and Russell, G. R.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19750000123},
  note = {Source identifier: 19750000123}
}