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Publikováno v:
The British journal of radiology. 50(597)
Neutron beams currently used for radiotherapy range from 16 MeV deuterons on beryllium at Hammersmith to 67 MeV protons on beryllium at the Fermilab; over this range the oxygen enhancement ratio (OER) appears to be constant at about 1.6 (Hall, 1975a,