Charge Pump for optimal dynamic range filters. - G. L. E. Monna; J. C. Sandee; Chris J. M. Verhoeven; Gerrit Groenewold; Arthur H. M. van Roermund (ISCAS, 1994)

Noise and Group Delay in Active Filters. - Gerrit Groenewold (IEEE Trans. Circuits Syst. I Regul. Pap., 2007)

Optimal Filter Networks. - Gerrit Groenewold (IEEE Trans. Circuits Syst. II Express Briefs, 2008)

Optimal Ladder Filters. - Gerrit Groenewold (IEEE Trans. Circuits Syst. II Express Briefs, 2009)