Bruce N Ames, Ilan Elson-Schwab, Eli A Silver, High-dose vitamin therapy stimulates variant enzymes with decreased coenzyme binding affinity (increased Km): relevance to genetic disease and polymorphisms, Am J Clin Nutr April 2002vol. 75 no. 4 616-658, Veebiversioon (vaadatud 26.06.2013)