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Hoppe, B. S.; Laser, B.; Kowalski, A. V.; Fontenla, S. C.; Pena-Greenberg, E.; Yorke, E. D.; Lovelock, D. M.; Hunt, M. A.; Rosenzweig, K. E. International Journal of Radiation Oncology, Biology, Physics (2008)
Padula, G. D. A.; Zelefsky, M. J.; Venkatraman, E. S.; Fuks, Z.; Lee, H. J.; Natale, L.; Leibel, S. A. International Journal of Radiation Oncology, Biology, Physics (2002)