@misc{indiciae53972b1b6d90,
  title = {Studies on Emission Processes in Optically Pumped Mercury Vapor},
  author = {Cunningham, D. E. and Helm, F. A.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660014488},
  note = {Source identifier: 19660014488}
}