@conference{121286, author = {David Wineland and Wayne Itano and James Bergquist and John Bollinger and D Heinzen and C Manney and F Moore and M Raizen and C Weimer}, title = {Trapped Ion Frequency Standards}, year = {1991}, month = {1991-01-01}, publisher = {Precise Time and Time Interval Meeting , Tysons Corner, VA}, language = {en}, }