van Reem, Eric (August 11, 2005). "Karpov, Kortchnoi win Unzicker Gala". ChessBase. Retrieved July 2, 2009. In his 1994 book My Best Games, Karpov says he played some 200 tournaments and matches, and won more than 100.
In an article (PDF) published in 2004 on the Chesscafe website Susan Polgar wrote: "I spoke to Boris Spassky about this same issue and he believes that Bobby would have won in 1975, but that Anatoly would have won the rematch."
