Noise reduction algorithms employing an intelligent inference engine for multimedia applications. - Andrzej Czyzewski; Rafal Królikowski (MMSP, 1998)

Echo and noise reduction methods for multimedia communication systems. - Andrzej Czyzewski; Rafal Królikowski; Slawomir K. Zielinski; Bozena Kostek (MMSP, 1999)

Rough Set Analysis of Electrostimulation Test Database for the Prediction of Post-Operative Profits in Cochlear Implanted Patients. - Andrzej Czyzewski; Henryk Skarzynski; Bozena Kostek; Rafal Królikowski (RSFDGrC, 1999)

Noise Reduction in Telecommunication Channels using Rough Sets and Neural Networks. - Rafal Królikowski; Andrzej Czyzewski (RSFDGrC, 1999)

Localization of Sound Sources by Means of Recurrent Neural Networks. - Rafal Królikowski; Andrzej Czyzewski; Bozena Kostek (Rough Sets and Current Trends in Computing, 2000)

Neuro-rough control of masking thresholds for audio signal enhancement. - Andrzej Czyzewski; Rafal Królikowski (Neurocomputing, 2001)

Self-Organization in Multi-Agent Systems Based on Examples of Modeling Economic Relationships between Agents. - Rafal Królikowski; Michal Kopys; Wojciech Jedruch (Frontiers Robotics AI, 2016)