@article{3241,
  author = {Andrew Ludlow and Nathan Hinkley and Jeffrey Sherman and Nate Phillips and Marco Schioppo and Nathan Lemke and Kyle Beloy and M Pizzocaro and Christopher Oates},
  title = {An atomic clock with 10<sup>-18</sup> instability},
  year = {2013},
  number = {341},
  month = {2013-09-13},
  publisher = {Science},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=914109},
  language = {en},
}