Bernd E. Langner "Selenium and Selenium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry (published on-line in 2000) Wiley-VCH, Weinheim, 2002 எஆசு:10.1002/14356007.a23_525
Schrauzer, GN (2001). "Nutritional selenium supplements: product types, quality, and safety". Journal of the American College of Nutrition20 (1): 1–4. doi:10.1080/07315724.2001.10719007. பப்மெட்:11293463.
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Schrauzer, GN (2001). "Nutritional selenium supplements: product types, quality, and safety". Journal of the American College of Nutrition20 (1): 1–4. doi:10.1080/07315724.2001.10719007. பப்மெட்:11293463.