The frequency transformation by matrix operation and its application in IIR filters design. - Jacek Konopacki (IEEE Signal Process. Lett., 2005)

A Simplified Method for IIR Filter Design with Quasi-Equiripple Passband and Least-Squares Stopband. - Jacek Konopacki; Katarzyna Moscinska (ICECS, 2007)

Linear-phase IIR filter design based on FIR prototype with prescribed group delay. - Jacek Konopacki; Katarzyna Moscinska (MIXDES, 2014)

NIR finger vascular system imaging in angiology applications. - Michal Walus; Krzysztof Bernacki; Jacek Konopacki; Michal Nycz (MIXDES, 2015)