TY - GEN AU - Eyvon M Petty C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2006-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.IR.6639-09 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2006 TI - NIST time and frequency bulletin, no. 585: ER -