Logic simulation and fault analysis of a self-checking switching processor. - Herbert Y. Chang; Robert C. Dorr; R. A. Elliott (DAC, 1972)

Self-Checking Combinational Logic Binary Counters. - Robert C. Dorr (IEEE Trans. Computers, 1972)

The Design of a Microprogrammed Self-Checking Processor of an Electronic Switching System. - Herbert Yu-Pang Chang; Robert C. Dorr; Daniel J. Senese (IEEE Trans. Computers, 1973)