Model-based geostatistics - Discussion par Webster, R, Lawson, AB, Glasbey, C, Horgan, G, Elston, D, Host, G, Mugglestone, M, Kenward, MG, Kent, J, Stein, A, Clifford, P, Ledford, A, Marriott, P, Aitkin, M, Atkinson, A, Boskov, M, Kelsall, J, Wakefield, J, Bowman, A, Casson, E, Cressie, N, Denison, D, Mallick, B, Dixon, P, Scott, M