OntoAqua: Ontology-based Modelling of Context in Water Safety and Security. - Alexandros-Michail Koufakis; Savvas Tzanakis; Anastasia Moumtzidou; Georgios Meditskos; Anastasios Karakostas; Stefanos Vrochidis; Ioannis Kompatsiaris (KEOD, 2021)