15 MHz elliptic OTA-C filters in 1.2$\mu$m CMOS technology / G. DEPTUCH, S. KUTA, R. WYDMAŃSKI // Electron Technology ; ISSN 0070-9816. — 1999 vol. 32 no. 3, s. 240–246. — Bibliogr. s. 246, Abstr.. — 5th International Conference MIXDES'98 „Mixed Design of Integrated Circuits and Systems” : Łódź, June 18–20, 1998 / ed. Andrzej Napieralski ; Department of Microelectronics and Computer Science, Technical University of Łódź. — Warszawa : Institute of Electron Technology, 1999

2.5V 14 MHz CMOS current mode 6-th order elliptic lowpass filter / S. KUTA, W. MACHOWSKI, J. JASIELSKI, G. DEPTUCH, R. WYDMAŃSKI // W: Proceedings of the XXIInd National Conference on Circuit Theory and Electronic Networks : Warszawa–Stare Jabłonki October 20–23, 1999, Vol. 2/2 / Warsaw University of Technology. Faculty of Electronics and Information Technology. Institute of Electronic Systems. — [Poland : s. n.], [1999]. — Na k. tyt. także: XXII Krajowa Konferencja Teoria Obwodów i Układy Elektroniczne. — Błędny ISBN: 909593-0-5. — ISBN10: 83-909-593-0-5. — S. 399–404. — Bibliogr. s. 404, Abstr.

CMOS current mode filters with arbitrary characteristics employing multiple loop feedback architectures / S. KUTA, W. MACHOWSKI, J. JASIELSKI, G. DEPTUCH, R. WYDMAŃSKI // W: MIXDES'99 : Mixed Design of integrated circuits and systems : Kraków 17–19 June 1999 : proceedings of the 6\textsuperscript{th} [sixth] International Conference / ed. Andrzej Napieralski. — [Poland] : [s. n.], 1999. — S. 357–362. — Bibliogr. s. 362, Abstr.