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pro vyhledávání: '"D. M. B. Watkins"'
Autor:
D. M. B. Watkins
Publikováno v:
The British journal of radiology. 48(573)
Many radiotherapy centres are now using stepped compensators of the Ellis type (Ellis, Oliver and Hall, 1959) placed some distance from the skin within the axis of the beam of radiation in order to reduce the amount of scattered secondary radiation a