@misc{indiciaed62548d600b8,
  title = {Precise isotope shift measurement using line narrowing induced by laser radiation.},
  author = {Bonczyk, P. A. and Cordover, R. H. and Javan, A.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670048351},
  note = {Source identifier: 19670048351}
}