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The coefficients ˜ C$_{jk}$ and ˜ D$_{jk}$ are the same as ˜ A$_{jk}$ and ˜ B$_{jk}$ , respectively, but two sound velocities and two at- tenuation coefficients must be interchanged. Then the functions defined in the density-density correlation func- tion, Eq. (87), are given by 

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