Match Book: The World Chess Championship 1963, by Mikhail M. Botvinnik, Tigran Petrosian, R. G. Wade (Editor).
Here is the tenth match game. It is interesting to see how Spassky energetically pressed the opening, but Petrosian, the great defender, held on and then pressed the counter-attack through Spassky's exposed kingside.
Match Book: Karpov-Kortchnoi : championnat du monde 1978 : toutes les parties commentées, by Jacques Négro