http://www.klitschko.com/en/home/news/article//wladimir-def-2/
http://www.sesboxing.de/?lang=de&site=news&index=20130402135126_Newsflash&title=Christina+Hammer%3A+%E2%80%9EIch+will+Weltmeisterin+aller+Klassen+werden!%E2%80%9C