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\bibitem{Doring_etal2011} Doring, M., Meissner, U. G., Oset, E., \& Rusetsky, A. (2011). Unitarized Chiral Perturbation Theory in a finite volume: Scalar meson sector. \textit{Eur. Phys. J. A}, \textit{47}(11), 139--15pp.

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