Error-Correcting-Codes in Computer Arithmetic - Chao-Kai Liu (1972)

On majority-logic-decodable arithmetic codes. - Chin-Long Chen; Robert T. Chien; Chao-Kai Liu (IEEE Trans. Inf. Theory, 1973)

Weight-Preserved Single-Error-Correcting Scheme for Binary Adders. - Tse Lin Wang; Chao-Kai Liu (IEEE Trans. Computers, 1974)

Error-Correcting Codes in Binary-Coded-Decimal Arithmetic. - Chao-Kai Liu; Tse Lin Wang (IEEE Trans. Computers, 1978)