References
- Sumi , T. 1994 . ISSCC Digest of Technical Papers . Feb. : 268 – 269 .
- Evans , J. T. 1988 . IEEE Journal of Solid State Circuits , 23 ( 5 ) Oct. : 1171 – 1175 .
- Womach , R. 1989 . ISSCC Digest of Technical Papers , Feb. : 242 – 243 .
- Eaton , S. S. 1988 . ISSCC Digest of Technical Papers , Feb. : 130 – 131 .