Introduction to Queen's Indian:
Wikipedia about Queen's Indian
Peter Wells: The Queen's Indian (pdf document)
Jouni Yrjölä and Jussi Tella: The Queen's Indian (pdf document)
Petrosian - Smyslov, Moscow 1961
Kasparov - Portisch, Niksic 1983
Kasparov - Korchnoi, London 1983
Gelfand - Hübner, Ohrid 2009
Kozul - Alekseev, Rijeka 2010
Fressinet - Alekseev, Khanty-Mansiysk 2009
Topalov - Aronian, Wijk aan Zee 2006
Yue - Adams, Baku 2008
Spassky - Tal, Montreal 1979