Funnily enough, I got a copy of "Petrosian's best games of chess 1946-1963" by Peter Clarke last weekend. I haven't started it yet, but I had a quick scan for you:
White: T. Petrosian
Black: S. Gligoric
Queen's Pawn, King's Indian Defence
1. P-Q4 Kt-KB3
2. P-QB4 P-KKt3
3. Kt-QB3 B-Kt2
4. P-K4 P-Q3
5. Kt-B3 0-0
6. B-K2 P-K4
7. P-Q5 QKt-Q2
8. B-kt5 P-KR3
9. B-R4
And I 'quote':
"The 'normal' position in the Petrosian System. It is a critical moment for the second player, for he must decide at once how to combat White's overall strategy of restraint. If he fails to take effective action, then, as we have seen, White will consolidate his advantage in space and translate it into a lasting initiative. The present game bears this out yet again.
Accordingly, the conclusion of both theory and practice is that Black should end the pin immediately by 9. ... P-KKt4, and seek compensation for the resultant white-square weakness in a vigorous campaign on the K side..."
"Petrosian's best games of chess 1946-1963" by Peter Clarke ISBN 1-84382-002-1
Hope this helps you.