Groups of Algebraic Integers Used for Coding QAM Signals. - Xue-Dong Dong; Cheong Boon Soh; Erry Gunawan; Li-Zhong Tang (IEEE Trans. Inf. Theory, 1998)

On Groups of Complex Integers Used as QAM Signals. - Xue-Dong Dong; Cheong Boon Soh; Erry Gunawan; Li-Zhong Tang (Inf. Sci., 1999)

On codes from cyclotomic fields for multidimensional signals. - Xue-Dong Dong; Cheong Boon Soh; Erry Gunawan (IMA J. Math. Control. Inf., 2005)