Cyclic Codes Over Z4 of Even Length

@article{Dougherty2006CyclicCO,
  title={Cyclic Codes Over Z4 of Even Length},
  author={Steven T. Dougherty and San Ling},
  journal={Des. Codes Cryptography},
  year={2006},
  volume={39},
  pages={127-153}
}
We determine the structure of cyclic codes over Z4 for arbitrary even length giving the generator polynomial for these codes. We determine the number of cyclic codes for a given length. We describe the duals of the cyclic codes, describe the form of cyclic codes that are self-dual and give the number of these codes. We end by examining specific cases of cyclic codes, giving all cyclic self-dual codes of length less than or equal to 14. 

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