@article{256021,
  author = {Jian Yao and Jeffrey Sherman and Tara Fortier and Andrew Ludlow and Holly Leopardi and Thomas Parker and William McGrew and Scott Diddams and Judah Levine},
  title = {Optical-Clock-Based Time Scale},
  year = {2019},
  month = {2019-10-30},
  publisher = {Physical Review Applied},
  language = {en},
}