@article{225371,
  author = {Gretchen Campbell and William Phillips},
  title = {Ultracold Atoms and Precise Time Standards},
  year = {2011},
  number = {369},
  month = {2011-09-19},
  publisher = {Philosophical Transactions of the Royal Society A-Mathematical Physical and Engineering Sciences},
  doi = {https://doi.org/10.1098/rsta.2011.0229},
  language = {en},
}