Some papers published by US Naval Observatory Time Services in 2018

Metrological Traceability of Time Signals
Presented at ION-PTTI, January, 2018
Demetrios Matsakis, Judah Levine, and Michael Lombardi

Fiftieth Anniversary of the Atomic Second
Transactions Ultransonics, Ferroelectrics, and Frequency Control, 65, Issue 5, 2018, pp. 1-6
Felicitas Arias, Demetrios Matsakis, Terry Quinn, and Patrizia Tavella

Vapor-cell frequency reference for short-wavelength transitions in neutral calcium
Journal of the Optical Society of America B, Vol. 35, No. 7, July 2018, p. 155
Jennifer Taylor, Bryan Hemingway, James Hanssen, Thomas B. Swanson, and Steven Peil

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