Authors: Hellaby, C

Citation: C. Hellaby, Multicolour observations, inhomogeneity and evolution, ASTRON ASTR, 372(2), 2001, pp. 357-363

Authors: Dray, T Ellis, G Hellaby, C

Citation: T. Dray et al., Note on signature change and Colombeau theory, GEN RELAT G, 33(6), 2001, pp. 1041-1046

Authors: Mustapha, N Hellaby, C

Citation: N. Mustapha et C. Hellaby, Clumps into voids, GEN RELAT G, 33(3), 2001, pp. 455-477