On the Need of a Formal Meta-modeling Semantics for Knowledge Graphs (Short paper). - Roberto Maria Delfino; Maurizio Lenzerini; Antonella Poggi (DP@AI*IA, 2024)

Answering Conjunctive Queries with Safe Negation and Inequalities over RDFS Knowledge Bases. - Gianluca Cima; Marco Console; Roberto Maria Delfino; Maurizio Lenzerini; Antonella Poggi (AAAI, 2025)