Codes from Cocycles. - Kathy J. Horadam; A. A. I. Perera (AAECC, 1997)

Cocyclic Generalised Hadamard Matrices and Central Relative Difference Sets. - A. A. I. Perera; Kathy J. Horadam (Des. Codes Cryptogr., 1998)

Factorisation of semiregular relative difference sets. - A. A. I. Perera; Kathy J. Horadam (Australas. J Comb., 2000)