@article{814531, author = {D Meekhof and Steven Jefferts and M Stepanovic and Tom Parker}, title = {Accuracy Evaluation of a Cesium Fountain Primary Frequency Standard at NIST}, year = {2001}, number = {50}, month = {2001-01-01 00:01:00}, publisher = {IEEE Transactions on Instrumentation and Measurement}, language = {en}, }