On the design of 2nd order multi-bit Sigma-Delta-modulators. - Saska Lindfors; Mika Länsirinne; T. Lindeman; Kari Halonen (ISCAS (2), 1999)

A 2.7 V CMOS dual-mode baseband filter for GSM and WCDMA. - Tuomas Hollman; Saska Lindfors; Teemu Salo; Mika Länsirinne; Kari Halonen (ISCAS (1), 2001)

A 2.7-V CMOS dual-mode baseband filter for PDC and WCDMA. - Tuomas Hollman; Saska Lindfors; Mika Länsirinne; Jarkko Jussila; Kari A. I. Halonen (IEEE J. Solid State Circuits, 2001)