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What is the phonon velocity of CuI? 


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The phonon velocity of CuI is not explicitly mentioned in the abstracts provided.

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The provided paper does not mention the phonon velocity of CuI.
The provided paper does not mention the phonon velocity of CuI.
The provided paper does not mention the phonon velocity of CuI.
The provided paper does not mention the phonon velocity of CuI. The paper is about the theory of renormalized phonon group velocity in high-temperature superconductors.

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