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What are the most reasonable references on the definition of the Namikawa-Weyl groups and the first results about them?

In particular, are there more recent (or more educational) texts than the original paper“Poisson deformations of affine symplectic varieties-II" by Namikawa himself?

Thanks in advance!

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I suggest the beautiful paper ``Springer theory for symplectic Galois groups'' by McGerty and Nevins. https://arxiv.org/abs/1904.10497

(Symplectic Galois groups is their name for Namikawa Weyl groups. Maybe it is a better name.)

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