New CNF Features and Formula Classification. - Enrique Matos Alfonso; Norbert Manthey (POS@SAT, 2014)

The WITH Platform: Where Culture Meets Creativity. - Michalis Giazitzoglou; Vassilis Tzouvaras; Alexandros Chortaras; Enrique Matos Alfonso; Nasos Drosopoulos (SEMANTiCS (Posters & Demos), 2017)

Rewriting Queries with Negated Atoms. - Enrique Matos Alfonso; Giorgos Stamou (RuleML+RR, 2017)

On Horn Conjunctive Queries. - Enrique Matos Alfonso; Giorgos Stamou (RuleML+RR, 2018)

UCQ-Rewritings for disjunctive knowledge and queries with negated atoms. - Enrique Matos Alfonso; Alexandros Chortaras; Giorgos Stamou (Semantic Web, 2021)

Connected Components and Disjunctive Existential Rules. - Enrique Matos Alfonso; Giorgos Stamou (CoRR, 2023)