U.S. Department of Health, Education, and Welfare (HEW), U.S. Public Health Service (PHS), Food and Drug Administration (FDA), Bureau of Radiological Health (BRH),
DHEW Publication No. (FDA) 73-8031 (BRH/DBE 73-3): 1-13
2018,
Aquila I, Gratteri S, Amirante C, Fineschi V, Frati P, Ricci P