M. Dimitrova, H. Wagatsuma, A. Krastev, E. Vrochidou, J. D. Nunez-Gonzalez, “A Review of Possible EEG Markers of Abstraction, Attentiveness and Memorisation in Cyber-Physical Systems for Special Education”, Frontiers in Robotics and AI, 31 August 2021. https://www.frontiersin.org/articles/10.3389/frobt.2021.715962/full (Section Biomedical Robotics – Research Topic Emerging Technologies for Assistive Robotics: Current Challenges and Perspectives. Guest Editors: Lyuba Alboul, Jacques Penders, Peter Mitrouchev, Maya Dimitrova, Anna Lekova, Vassilis Kaburlasos)