1. Codes over Gaussian integers;Huber;IEEE Trans. Inform. Theory,1994
2. M. Özen, M. Güzeltepe, Cyclic Codes over Some Finite Rings, e-print arXiv:0905.4163v1.
3. M. Özen, M. Güzeltepe, Codes over Quaternion Integers, e-print arXiv:0905.4160v1.
4. Elementary Number Theory, Group Theory, and Ramanujan Graphs;Davidoff,2003
5. G. Dresden, W.M. Dymacek, Finding factors of factor rings over the Gaussian integers, Math. Assoc. Amer. Monthly August–September (2005).