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Dokter, E. (author), Meles, G.A. (author), Curtis, A (author), Wapenaar, C.P.A. (author)A number of seismic processing methods, including velocity analysis (Sheriff and Geldart, 1999), make the assumption that recorded waves are primaries - that they have scattered only once (the Born approximation). Multiples then represent a source of coherent noise and must be suppressed to avoid artefacts. There are different approaches to...conference paper 2017