Guill, JH; Moteff, John (June 1960). "Dosimetry in Europe and the USSR". Third Pacific Area Meeting Papers — Materials in Nuclear Applications. Symposium on Radiation Effects and Dosimetry - Third Pacific Area Meeting American Society for Testing Materials, October 1959, San Francisco, 12–16 October 1959. American Society Technical Publication. Vol. 276. ASTM International. p. 64. LCCN60014734. Retrieved 2012-05-15.
Gupta, S. V. (2009-11-19). "Louis Harold Gray". Units of Measurement: Past, Present and Future : International System of Units. Springer. p. 144. ISBN978-3-642-00737-8. Retrieved 2012-05-14.
Siegbahn, Manne; et al. (October 1929). "Recommendations of the International X-ray Unit Committee". Radiology. 13 (4): 372–3. doi:10.1148/13.4.372. S2CID74656044.
Guill, JH; Moteff, John (June 1960). "Dosimetry in Europe and the USSR". Third Pacific Area Meeting Papers — Materials in Nuclear Applications. Symposium on Radiation Effects and Dosimetry - Third Pacific Area Meeting American Society for Testing Materials, October 1959, San Francisco, 12–16 October 1959. American Society Technical Publication. Vol. 276. ASTM International. p. 64. LCCN60014734. Retrieved 2012-05-15.
Siegbahn, Manne; et al. (October 1929). "Recommendations of the International X-ray Unit Committee". Radiology. 13 (4): 372–3. doi:10.1148/13.4.372. S2CID74656044.