Kingpin Chess Magazine » Spassky's Toughest Simul

What was Bobby Fischer's rating per age from his first chess game to the time he retired? - Quora

Accuracy, Ratings, and GOATs

The chess games of Boris Spassky

is Boris Spassky too underrated? - Chess Forums

Boris Spassky's Road to the Summit: W. H. Cozens: : Books

ChessBase India - The 10th World Champion Boris Spassky

Magnus Carlsen has record rating but is not as dominant as Bobby Fischer

Boris Spassky's 400 Selected Games (Games Collections) - Soloviov, Sergei: 9789548782296 - AbeBooks

Spassky's 100 Best Games: The Rise of Boris Spassky, 1949 - 1971 (Hardinge Simpole Chess Classics S): Cafferty, Bernard, Barden, Leonard: 9781843820000: : Books

Boris Spassky. Volume 1 (Russian Edition)