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\bibitem{Gil_etal2012} Gil, A., Diaz, J., Gomez-Cadenas, J. J., Herrero, V., Rodriguez, J., Serra, L., et al. (2012). Front-end electronics for accurate energy measurement of double beta decays. \textit{Nucl. Instrum. Methods Phys. Res. A}, \textit{695}, 407--409.

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