@conference{122586,
  author = {Steven Jefferts and D Meekhof and Leo Hollberg and Robert Drullinger and D Lee and F Walls and Craig Nelson and F Levi and Thomas Parker},
  title = {NIST Cesium Fountain Frequency Standard: Preliminary Results},
  year = {1998},
  month = {1998-01-01},
  publisher = {1998 Intl. Freq. Cont. Symp , Pasadena, CA},
  language = {en},
}