@conference{826206,
  author = {A Hasegawa and K Fukuda and N Kotake and M Kajita and D Morikawa and D Lee and Craig Nelson and D Jennings and L Mullen and Jon Shirley and Robert Drullinger},
  title = {Development of an Improved Optically Pumped Primary Frequency Standard},
  year = {1998},
  month = {1998-01-01 00:01:00},
  publisher = {CPEM ''98 , Washington, DC, USA},
  language = {en},
}