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\bibitem{Hueso-Gonzalez_etal2017} Hueso-Gonzalez, F., Ballester, F., Perez-Calatayud, J., Siebert, F. A., \& Vijande, J. (2017). Towards clinical application of RayStretch for heterogeneity corrections in LDR permanent I-125 prostate brachytherapy. \textit{Brachytherapy}, \textit{16}(3), 616--623.

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