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I will report on the recent LHCb results on the evidence for the decay$X(3872)\rightarrow\psi(2S) \gamma$, and on the improved measurement of themass and width of the $Z(4430)^-$, the determination of its quantum numbers andthe observation of its resonant character.

Exotic charmonium-like spectroscopy at LHCb: a study of the X(3872) and of the Z(4430)^-