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Bauch, A; Achkar, J; Bize, S; Calonico, D; Dach, Rolf; Hlavac, R; Lorini, L; Parker, T; Petit, G; Piester, D; Szymaniec, K; Uhrich, P (2006). Comparison between frequency standards in Europe and the USA at the 1e-15 uncertainty level. Metrologia, 43(1), pp. 109-120. Bristol, UK: Institute of Physics Publishing IOP 10.1088/0026-1394/43/1/016
