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\bibitem{Gimenez-Alventosa_etal2017} Gimenez-Alventosa, V., Antunes, P. C. G., Vijande, J., Ballester, F., Perez-Calatayud, J., \& Andreo, P. (2017). Collision-kerma conversion between dose-to-tissue and dose-to-water by photon energy-fluence corrections in low-energy brachytherapy. \textit{Phys. Med. Biol.}, \textit{62}(1), 146--164.

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