@misc{1150746, author = {Petrina C. Potts}, title = {NIST time and frequency bulletin:}, year = {2013}, month = {2013-05-01 04:05:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.IR.1149-05}, language = {en}, }