@conference{179861,
  author = {Wayne Itano and James Bergquist and Anders Brusch and Scott Diddams and Tara Fortier and Thomas Heavner and Leo Hollberg and David Hume and Steven Jefferts and Luca Lorini and Thomas Parker and Till Rosenband and Jason Stalnaker},
  title = {Optical frequency standards based on mercury and aluminum ions},
  year = {2007},
  number = {6673},
  month = {2007-09-12},
  publisher = {Proceedings of the SPIE, Conference 6673},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50597},
  language = {en},
}