Constructing Data Bases to Fit a Microcomputer. - H. J. J. Nefkens (J. Int. Comput. Games Assoc., 1985)

Personal Chess Endgames. - Harry Nefkens (J. Int. Comput. Games Assoc., 1991)

How to Win with a Knight Ahead. - H. J. J. Nefkens (J. Int. Comput. Games Assoc., 1991)

Before Databases. - David N. L. Levy; Harry Nefkens (J. Int. Comput. Games Assoc., 1992)