G. Antzoulatos, I. Koulalis, A. Karakostas, S. Vrochidis, I. Kompatsiaris, “Towards integrating a multi-layer Machine Learning Data Fusion approach into Crisis Classification and Risk Assessment of extreme natural events“, in Technology Development for Security Practitioners, B. Akhgar, D. Kavallieros, and E. Sdongos, Eds., Springer, Security Informatics and Law Enforcement Series, 2021.