1. World Anti‐Doping Agency. The world anti‐doping code: the 2008 prohibited list, International Standard. 2008; http://www.wada‐ama.org/rtecontent/document/2008_List_ En.pdf.
2. Issues in detecting abuse of xenobiotic anabolic steroids and testosterone by analysis of athletes' urine;Catlin;Clinical Chemistry,1997
3. Isolation of 17α–hydroxyandrost‐4‐en‐3‐one (Epitestosterone) from human urine;Korenman;Journal of Biological Chemistry,1964
4. World Anti‐Doping Agency. WADA technical document—TD2004EAAS. Reporting and evaluation guidance for testosterone, epitestosterone, T/E Ratio, and other endogenous steroids. 2004; http://www.wada‐ama.org/rtecontent/document/end_steroids_aug_04.pdf.
5. 13C/12C isotope ratio MS analysis of testosterone, in chemicals ans pharmaceutical preparations;de la Torre;Journal of Pharmaceutical and Biomedical Analysis,2001