@misc{1147386, author = {Gwen E Bennett}, title = {NIST time and frequency bulletin no. 500:}, year = {1999}, month = {1999-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.IR.5082-07}, language = {en}, }