Gutteridge, John M.C.; Halliwell, Barry «Free Radicals and Antioxidants in the Year 2000: A Historical Look to the Future» (en anglès). Annals of the New York Academy of Sciences, 899, 1, 25-01-2006, pàg. 136–147. DOI: 10.1111/j.1749-6632.2000.tb06182.x. «Daniel Gilbert, Rebeca Gerschman and their colleagues related the toxic effects of elevated oxygen levels on aerobes to those of ionizing radiation, and proposed that oxygen toxicity is due to free radical formation, in a pioneering paper in 1956.»
Gutteridge, John M.C.; Halliwell, Barry «Free Radicals and Antioxidants in the Year 2000: A Historical Look to the Future» (en anglès). Annals of the New York Academy of Sciences, 899, 1, 25-01-2006, pàg. 136–147. DOI: 10.1111/j.1749-6632.2000.tb06182.x. «Daniel Gilbert, Rebeca Gerschman and their colleagues related the toxic effects of elevated oxygen levels on aerobes to those of ionizing radiation, and proposed that oxygen toxicity is due to free radical formation, in a pioneering paper in 1956.»