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Disambiguation of "Gratton, Serge"

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An improved two-grid preconditioner for the solution of three-dimensional Helmholtz problems in heterogeneous media.

, , , and . Numerical Lin. Alg. with Applic., 20 (4): 663-688 (2013)

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Elena Sergeyev

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Dieter Sergel

Jean-Frédéric Sergejew

 

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