1. Johnson EL, Karim MA. Digital design: a pragmatic approach. Boston: PWS-KENT Publishing Co., 1987
2. Effective pipelining of digital systems;Jump;IEEE Trans Comput,1978
3. Szabo NS, Tanaka RI. Residue arithmetic and its applications to computer technology. New York: McGraw-Hill, 1967
4. Signed-digit number representations for fast parallel arithmetic;Avizienis;IRE Trans Electron Comput,1961
5. A novel Josephson adder without carry propagation delay;Li;IEEE Trans Appl Superconductivity,1993