1. D.A. Hodges, P.R. Gray, and R.W. Brodersen, “Potential of MOS Technologies for Analog Integrated Circuits”, IEEE J. of Solid-State Circuits, vol. SC-13, pp. 285–294, June 1978.
2. J.C. Candy, “Decimation for sigma delta modulation”, IEEE Transactions on Communications, vol. COM-34, pp. 72–76, Jan. 1986.
3. J.R. Fox and G.J. Garrison, “Analog to Digital Conversion using Sigma-Delta Modulation and Digital Signal Processing”, in Proceedings MIT VLSI Conference, pp. 101–112, Jan. 1982.
4. M.W. Hauser and R.W. Brodersen, “Circuit and Technology Considerations for MOS Delta-Sigma A/D Converters”,’ in Proceedings 1986 International Symposium on Circuits and Systems, pp. 1310–1315, May 1986.
5. H. Inose, Y. Yasuda, and J. Murakami, “A Telemetering System by Code Modulation AI-Modulation”, IRE Trans. Space Electronics and Telemetry, vol.SET-8, pp. 204–209, Sept. 1962.