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Valentin, J (2000). «Case histories of major accidental exposures in radiotherapy». Annals of the ICRP (SAGE Publications) 30 (3): 23-29. ISSN0146-6453. doi:10.1016/s0146-6453(01)00039-2.
Almond, Peter (2013). Cobalt Blues : The Story of Leonard Grimmett, the Man Behind the First Cobalt-60 Unit in the United States. New York, NY: Springer. p. 113. ISBN978-1-4614-4923-2. OCLC820724368.