VELONEWS INTERACTIVE, WITH WIRE SERVICES. L'Equipe alleges Armstrong samples show EPO use in 99 Tour [online]. Inside Communications, 2005 [cit. 2006-07-26]. (News & Features). Dostupné v archivu pořízeném dne 2006-02-15.- "Throughout his career only one test showed indications of the presence of doping products. In the 1999 Tour, a urine sample showed small traces of cortico-steroids. Armstrong was cleared, however, when his U.S. Postal team, produced a medical certificate showing that he used a cream to ease the pain of a saddle sore. Even that sample, however, was below the levels that would have triggered a positive result at the time."
Armstrong má další problém, někteří dárci jeho nadace chtějí své peníze zpět. sport.ihned.cz [online]. [cit. 2012-10-22]. Dostupné v archivu pořízeném dne 2012-10-22.
Critérium du Dauphiné : Le palmarès depuis 1947. www.letour.fr [online]. [cit. 2013-04-04]. Dostupné v archivu pořízeném dne 2012-08-22.
