The Italian Gambit System, And, A Guiding Repertoire for ...
Jude Acers
Chess World Championship, All the Games 1834-1984, James H. Gelo.
McFarland, 1988. Emanuel Lasker, the Life of a Chessmaster, Dr. J. Hannak.
Dover Paperbacks, 1 99 1 . 108 The Petroff Defence, Gyozo Forintos and Ervin
Haag.