TY - CONF AU - Jefferts, Steven AU - Meekhof, D AU - Shirley, Jon AU - Parker, Thomas C2 - 13^uth^ European Frequency and Time Forum and 1999 IEEE Int. Freq. Symp. , Besan{c-cedilla}on, FR DA - 1999-01-01 LA - en PB - 13^uth^ European Frequency and Time Forum and 1999 IEEE Int. Freq. Symp. , Besan{c-cedilla}on, FR PY - 1999 TI - Preliminary Accuracy Evaluation of a Cesium Fountain Primary Frequency Standard at NIST UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=105321 ER -