A.Koufakis, D.Chatzakou, G.Meditskos, T.Tsikrika, S.Vrochidis, I.Kompatsiaris, “Semantic Web Technologies in Fighting Crime and Terrorism: The CONNEXIONs Approach“, Invited talk in 1st International Workshop on IoT infrastructures for safety in pervasive environments (IoT4SAFE), 2 June, 2020.