Second order Sigma-Delta modulator realization. - George I. Bourdopoulos; Aristodimos Pneumatikakis; Theodore L. Deliyannis (ICECS, 1996)

Generalized linear model for ΣΔ modulators. - George I. Bourdopoulos; Aristodemos Pnevmatikakis; Theodore L. Deliyannis (ICECS, 1998)

Optimal NTFs for single-bit ΣΔ modulators. - George I. Bourdopoulos; A. G. Pneumatikakis; Theodore L. Deliyannis (DSP, 2002)

Adaptive order reduction scheme for high-order single-bit ΔΣ Modulators. - George I. Bourdopoulos (IEEE Trans. Circuits Syst. II Express Briefs, 2004)

Numerical method for determining the quantization error PDF of single-bit ΣΔ Modulators. - George I. Bourdopoulos; Aristodemos Pnevmatikakis; Theodore L. Deliyannis (IEEE Trans. Circuits Syst. I Regul. Pap., 2004)