Coherent covariance analysis of periodically correlated random processes. - Ihor Javorskyj; Ihor Isayev; Zbigniew Zakrzewski; Stephen P. Brooks (Signal Process., 2007)

Discrete estimators of characteristics for periodically correlated time series. - Ihor Javorskyj; Ivan Matsko; Roman Yuzefovych; Zbigniew Zakrzewski (Digit. Signal Process., 2016)

Statistical analysis of periodically non-stationary oscillations for unknown period. - Ihor Javorskyj; R. M. Roman Yuzefovych; Ivan Matsko; Zbigniew Zakrzewski; Jacek Majewski (MIXDES, 2017)

Coherent covariance analysis of periodically correlated random processes for unknown non-stationarity period. - Ihor Javorskyj; Roman Yuzefovych; Ivan Matsko; Zbigniew Zakrzewski; Jacek Majewski (Digit. Signal Process., 2017)

Nonparametric Spectral Analysis of Periodically Nonstationary Vibration Signals for Electrical Rotary Machines Testing. - Ihor Javorskyj; Pawel Semcnov; Roman Yuzefovych; Zbigniew Zakrzewski (MIXDES, 2018)

Optical Channel Selection Avoiding DIPP in DSB-RFoF Fronthaul Interface. - Zbigniew Zakrzewski (Entropy, 2021)

The least square estimation of the basic frequency for periodically non-stationary random signals. - Ihor Javorskyj; Roman Yuzefovych; Ivan Matsko; Zbigniew Zakrzewski (Digit. Signal Process., 2022)