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\bibitem{Borja-Lloret_etal2023} Borja-Lloret, M., Barrientos, L., Bernabeu, J., Lacasta, C., Mu{\~n}oz, E., Ros, A., et al. (2023). Influence of the background in Compton camera images for proton therapy treatment monitoring. \textit{Phys. Med. Biol.}, \textit{68}(14), 144001--16pp.

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