He is author or co-author of more than 70 reviewed papers in various fields of Artificial Intelligence, which have been published in international journals (including "Artificial Intelligence" and "Journal of Artificial Intelligence Research") and conferences (including CP, ECAI, IJCAI, ICAPS, AAAI, SOCS). Most of his scientific work concerns the following aspects: design and analysis of languages for knowledge representation and automated reasoning, computational complexity analysis, development of efficient algorithmic techniques and data structures, implementation of innovative software systems and experimental analysis of the proposed algorithmic techniques. The software systems that he developed, LPG, LPG-td, PbP.s and PbP2.q have been awarderd at several editions of the Internation Planning Competition (IPC), which is an important scientific event organized in the context of the International Conference on Planning and Scheduling (ICAPS).

His research interests focus on temporal reasoning, constraint-based reasoning, anytime planning, machine learning for planning, mixed-initiative planning, plan execution, monitoring and repair, planning with resources and time constraints and HTN-planning.