Efficient Nearest Neighbor Queries on Non-point Data. - Achilleas Michalopoulos; Dimitrios Tsitsigkos; Panagiotis Bouros; Nikos Mamoulis; Manolis Terrovitis (SIGSPATIAL/GIS, 2023)

Similarity Search based on Geo-footprints. - Achilleas Michalopoulos; Konstantinos Lampropoulos 002; George Kelantonakis; Chrysostomos Zeginis; Kostas Magoutis; Nikos Mamoulis (EDBT, 2024)

Efficient Distance Queries on Non-point Data. - Achilleas Michalopoulos; Dimitrios Tsitsigkos; Panagiotis Bouros; Nikos Mamoulis; Manolis Terrovitis (ACM Trans. Spatial Algorithms Syst., 2025)

BS-tree: A gapped data-parallel B-tree. - Dimitrios Tsitsigkos; Achilleas Michalopoulos; Nikos Mamoulis; Manolis Terrovitis (CoRR, 2025)