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Rolf M. Sievert, The tolerance dose and the prevention of injuries caused by ionizing radiations. British Journal of Radiology. ,vol. 20, pp. 306- 318 ,(1947) , 10.1259/0007-1285-20-236-306
Frank Ellis, The Genetic Effects of Non-Sterilising Doses of Penetrating Radiation British Journal of Radiology. ,vol. 21, pp. 1- 4 ,(1948) , 10.1259/0007-1285-21-241-1