Abbas, F; Allan, D W*; Ashby, N*; Hodge, C; Holland, J*; Jedamzik, D*; Langham, C D; Maleki, L*; Trowles, T* (1997) A novel concept for the direct intercomparison of the Allan Variance of frequency standards at the 10-18 level with application to metrology, global communication and navigation. In: Proc. 11th European Frequency and Time forum, 1997, Neuchatel, Switzerland.