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\bibitem{Oliveira_etal2011} Oliveira, C. A. B., Sorel, M., Martin-Albo, J., Gomez-Cadenas, J. J., Ferreira, A. L., \& Veloso, J. F. C. A. (2011). Energy resolution studies for NEXT. \textit{J. Instrum.}, \textit{6}, P05007--13pp.

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