1. S.R. Norsworthy, R. Schreier, and G.C. Temes, Delta-Sigma Data Converters: Theory Design, and Simulation. NY: IEEE Press, 1996.
2. K.C. Chao, S. Nadeem, W.L. Lee, and C.G. Sodini, “A higher order topology for interpolative modulators for oversampling A/D converters.” IEEE Trans. Circuits Syst. II, vol. 37, pp. 309–318, 1990.
3. T.C. Leslie and B. Singh, “An improved sigma-delta modulator architecture.” in Proc. IEEE Int. Symp. Circuits and Systems, vol. 1, 1990, pp. 372–375.
4. J.-S. Chiang, T.-H. Chang, and P.-C. Chou, “Novel noise shaping of cascaded sigma-delta modulator for wide bandwidth applications.” in IEEE Int. Conf. Electron., Circuits and Systems, vol. 3, 2001, pp. 1379–1382.
5. J.-S. Chiang, T.-H. Chang, and P.-C. Chou, “A novel wideband low-distortion cascaded sigma-delta ADC.” in Proc. IEEE Int. Symp. Circuits and Systems, vol. 2, 2002, pp. 636–639.