1. SELENIUM POISONING
2. M. Polo and R.da Pisa , The Travels of Marco Polo: The Venetian , ed. W. Marsden (Translator) and T. Wright , Boni & Liveright , New York , 1926
3. R. H. Coolidge , Statistical Report on Illness and Mortality in the Army of the United States, Jan 1857–Jan 1860, U.S. Congress 26th Session, Senate Exch. Doc., 52, 37
4. Essentiality and toxicity of selenium and its status in Australia: a review
5. Accidental death from acute selenium poisoning