Chessbook - Nicolai V. Pedersen - Play the Benko Gambit (2011)

The Benko Gambit is undoubtedly one of Black’s most exciting openings. In return for a pawn investment Black gains long-term pressure, which is so strong it often lasts into the endgame! White must decide whether to grab the pawn and hold on, or to choose a more aggressive approach. Either way, Black succeeds in unbalancing the position from a very early stage.
In this book, Nicolai V. Pedersen presents a practical repertoire for Black within the Benko Gambit. He also covers various options White has of avoiding the Benko, and how to deal with these situations.

Use Chessbase to open cbv-file.
Use Everyman Chess Viewer on Android to open pgn-file. Put pgn in Chess_Viewer folder and Import.

Enjoy,
pita862