A CMOS OTA for HF filters with programmable transfer function. - Eric J. van der Zwan; Eric A. M. Klumperink; Evert Seevinck (IEEE J. Solid State Circuits, 1991)

A 0.2-mW CMOS ΣΔ modulator for speech coding with 80 dB dynamic range. - Eric J. van der Zwan; Eise Carel Dijkmans (IEEE J. Solid State Circuits, 1996)

A 1.8-mW CMOS ΣΔ modulator with integrated mixer for A/D conversion of IF signals. - Lucien J. Breems; Eric J. van der Zwan; Johan H. Huijsing (IEEE J. Solid State Circuits, 2000)

A 10.7-MHz IF-to-baseband ΣΔ A/D conversion system for AM/FM radio receivers. - Eric J. van der Zwan; Kathleen Philips; Corné A. A. Bastiaansen (IEEE J. Solid State Circuits, 2000)