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IOC sanctions four athletes for failing anti-doping tests at Beijing 2008 and London 2012. International Olympic Committee. 2017-01-25. Dostupné online [cit. 2017-12-15]. (anglicky)
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2 Russian athletes stripped of world track medals for doping. Washington Post [online]. [cit. 2018-09-05]. Dostupné v archivu pořízeném z originálu dne 2018-09-05. (anglicky)