@conference{229391,
  author = {Thomas Parker and Stefania Romisch},
  title = {A Clock Ensemble Using Only Active Hydrogen Masers},
  year = {2017},
  month = {2017-01-31},
  publisher = {Proceedings of the 48th Annual Precise Time and Time Interval Systems and Applications Meeting, Monterey, CA},
  language = {en},
}