Chess Is My Life!: Python Strategy - A book review

Why did Petrosian stop playing the Petroff

Chess Network - Chess greats Boris Spassky, Mikhail Tal & Tigran Petrosian, 1958

The Petrosian-Spassky World Championship Match (Moscow, 1966), with annotations by Tal, Boleslavsky, Bondarevsky, etc.

Petrosian's World Championship Immortal! - Best Of The 60s - Petrosian vs. Spassky, 1966

Tal, Petrosian, Spassky and Korchnoi, by Andrew Soltis –

Tigran Petrosian (June 17, 1929 – August 13, 1984) - Chess Giants - CHESS POWER

Boris Spassky vs Tigran V Petrosian World Championship Match, 1966

The Fischer-Petrosian Candidates' Final (Buenos Aires, 1971) with annotations by Korchnoi, Furman, Kholmov & Polugaevsky.

The 10th World - FIDE - International Chess Federation

Šah mat - Tigran Petrosian vs Boris Spassky