@misc{indiciae9513eee442ad,
  title = {Supersonic electrical-discharge copper vapor laser.},
  author = {Russell, G. R. and Nerheim, N. M. and Pivirotto, T. J.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730029944},
  note = {Source identifier: 19730029944}
}