@misc{1198411, author = {Gwen E Bennett}, title = {Time & frequency bulletin No. 386:}, year = {1990}, month = {1990-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.IR.90-3940-1}, language = {en}, }