[1] A. Kostrzewski, D. Kim, Y. Li et al.. Fast hybrid parallel carry look-ahead adder. Opt. Lett., 1990, 15: 915～917

[2] S. P. Kozaitis. Higher-order rules for symbolic substitution. Opt. Commun., 1988, 65: 339～342

[3] R. I. MacDonald. Optoelectronic switch matrix as a look-up table array processor. Opt. Lett., 1987, 12: 787～788

[4] B. L. Drake, R. P. Bocker, M. E. Lasher et al.. Photonic computing using the modified sign-digit numberrep resentation. Opt. Engng., 1986, 25: 38～43

[5] S. Zhou, S. Campbell, P. Yeh. Modified-signed-digit optical computing by fan-out elements. Opt. Lett., 1992, 17: 1697～1699

[6] Y. Li, G. Eichmann. Conditional symbolic modified signed-digit arithmetic using optical content addressable memory logic elements. Appl. Opt., 1987, 26: 2328～2333

[7] A. K. Cherri, M. A. Karim. Modified signed-digit arithmetic using an efficient symbolic substitution. Appl. Opt., 1988, 27: 3824～3827

[8] S. Zhou, S. Campbell, P. Yeh et al.. Two-stage modified signed-digit optical computing by spatial data encoding and polarization multiplexing. Appl. Opt., 1995, 34: 793～802

[9] S. Barua. Single-stage optical adder/subtractor. Opt. Engng., 1991, 30: 265～270

[10] H. Huang, M. Ito, T. Yatagai. Modified signed-digit arithmetic based on redundant bit representation. Appl. Opt., 1994, 33: 6146～6156

[11] G. Li, L. Liu, L. Shao et al.. Negabinary arithmetic algorithms for digital parallel optical computation. Opt. Lett., 1994, 19: 1337～1339

[12] L. Liu, G. Li, Y. Yin. Optical complex matrix-vector multiplication using negabinary inner-products. Opt. Lett., 1994, 19: 1759～1761

[13] T. Yatagai. Optical space-variant logic-gate array based on spatial encoding technique. Opt. Lett., 1986, 11: 260～262