Self-dual codes over Z8 and Z9. - Steven T. Dougherty; T. Aaron Gulliver; John N. C. Wong (Des. Codes Cryptogr., 2006)

Classification of Optimal Linear Z4 Rate 1/2 Codes of Length <= 8. - T. Aaron Gulliver; John N. C. Wong (Ars Comb., 2007)