@misc{indiciae2b89ed37cfc9,
  title = {An optical clock based on a single trapped 199Hg+ ion.},
  author = {S A Diddams and T Udem and J C Bergquist and E A Curtis and R E Drullinger and L Hollberg and W M Itano and W D Lee and C W Oates and K R Vogel and D J Wineland},
  year = {2001},
  doi = {10.1126/science.1061171},
  url = {https://pubmed.ncbi.nlm.nih.gov/11452082/},
  note = {Source identifier: 11452082}
}