@misc{1200556, author = {Petrina C Potts}, title = {NIST time and frequency bulletin:}, year = {2014}, month = {2014-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.IR.7980-11}, language = {en}, }