Binary Logic for Residue Arithmetic Using Magnitude Index. - Thammavarapu R. N. Rao; Avtar K. Trehan (IEEE Trans. Computers, 1970)

Single-Error-Correcting Nonbinary Arithmetic Codes. - Thammavarapu R. N. Rao; Avtar K. Trehan (IEEE Trans. Inf. Theory, 1970)