Characterization of projective planes of small prime orders. - Chat Yin Ho (J. Comb. Theory A, 1986)

Some Remarks on Orders of Projective Planes, Planar Difference Sets and Multipliers. - Chat Yin Ho (Des. Codes Cryptogr., 1991)

Incidence Matrices and Collineations of Finite Projective Planes. - Chat Yin Ho (Des. Codes Cryptogr., 1999)

A Correction to "Incidence Matrices and Collineations of Finite Projective Planes" by Chat Yin Ho, Designs, Codes and Cryptography, 18 (1999). - D. Brozovic; Chat Yin Ho; Akihiro Munemasa (Des. Codes Cryptogr., 2002)