Comments on "An SVD-Based Watermarking Scheme for Protecting Rightful Ownership". - Roman Rykaczewski (IEEE Trans. Multim., 2007)

Digital fingerprinting for color images based on the quaternion encryption scheme. - Bartosz Czaplewski; Mariusz Dzwonkowski; Roman Rykaczewski (Pattern Recognit. Lett., 2014)

Matrix-based robust joint fingerprinting and decryption method for multicast distribution of multimedia. - Bartosz Czaplewski; Roman Rykaczewski (Signal Process., 2015)

A New Quaternion-Based Encryption Method for DICOM Images. - Mariusz Dzwonkowski; Michal Papaj; Roman Rykaczewski (IEEE Trans. Image Process., 2015)

Secure Quaternion Feistel Cipher for DICOM Images. - Mariusz Dzwonkowski; Roman Rykaczewski (IEEE Trans. Image Process., 2019)

Reversible Data Hiding in Encrypted DICOM Images Using Cyclic Binary Golay (23, 12) Code. - Mariusz Dzwonkowski; Roman Rykaczewski (IEEE Access, 2021)