Article

Leute, J*; Huntemann, N*; Lipphardt, B*; Tamm, C*; Nisbet-Jones, P B R; King, S A; Godun, R M*; Jones, J M*; Margolis, H S; Whibberley, P B; Wallin, A*; Merimaa, M*; Gill, P; Peik, E* (2016) Frequency comparison of 171Yb+ ion optical clocks at PTB and NPL via GPS PPP. IEEE Trans. Ultrason. Feroelectr. Freq. Control, 63 (7). pp. 981-985.

Conference or Workshop Item

Gubin, M*; Kovalchuk, E*; Petrukhin, E*; Shelkovnikov, A*; Tyurikov, D*; Gamidov, R*; Erdogan, C*; Sahin, E*; Felder, R*; Gill, P; Lea, S N; Kramer, G*; Lipphardt, B* (2002) Absolute frequency measurements with a set of transportable He-Ne/CH4 optical frequency standards and prospects for future design and applications. In: Proceedings of the 6th Symposium on Frequency Standards and Metrology, 9-14 September 2001, University of St Andrews, Fife, Scotland, UK.