@conference{825311,
  author = {Vladislav Demidov and A Belyaev and B Sakharov and A Jljanov and F Walls},
  title = {Passive Hydrogen Maser Frequency Stability and Accuracy Investigations},
  year = {1993},
  month = {1993-01-01 00:01:00},
  publisher = {7^uth^ European Frequency and Time Forum , Neuchtel, 1, SZ},
  language = {en},
}