Authors: Niering, M Holzwarth, R Reichert, J Pokasov, P Udem, T Weitz, M Hansch, TW Lemonde, P Santarelli, G Abgrall, M Laurent, P Salomon, C Clairon, A

Citation: M. Niering et al., Measurement of the hydrogen 1S-2S transition frequency by phase coherent comparison with a microwave cesium fountain clock, PHYS REV L, 84(24), 2000, pp. 5496-5499