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\bibitem{Gamermann_etal2010} Gamermann, D., Nieves, J., Oset, E., \& Ruiz Arriola, E. (2010). Couplings in coupled channels versus wave functions: Application to the X(3872) resonance. \textit{Phys. Rev. D}, \textit{81}(1), 014029--14pp.

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