Performance Comparison of xBR-trees and R*-trees for Single Dataset Spatial Queries. - George Roumelis; Michael Vassilakopoulos; Antonio Corral (ADBIS, 2011)

Nearest Neighbor Algorithms Using xBR-Trees. - George Roumelis; Michael Vassilakopoulos; Antonio Corral (Panhellenic Conference on Informatics, 2011)

The Deletion Operation in xBR-Trees. - George Roumelis; Michael Vassilakopoulos; Antonio Corral (Panhellenic Conference on Informatics, 2012)

Database Design of a Geo-environmental Information System . - George Roumelis; Thanasis Loukopoulos; Michael Vassilakopoulos (ICEIS (2), 2014)

A New Plane-Sweep Algorithm for the K-Closest-Pairs Query. - George Roumelis; Michael Vassilakopoulos; Antonio Corral; Yannis Manolopoulos (SOFSEM, 2014)

The xBR ^+ -tree: An Efficient Access Method for Points. - George Roumelis; Michael Vassilakopoulos; Thanasis Loukopoulos; Antonio Corral; Yannis Manolopoulos (DEXA (1), 2015)

Plane-Sweep Algorithms for the K Group Nearest-Neighbor Query. - George Roumelis; Michael Vassilakopoulos; Antonio Corral; Yannis Manolopoulos (GISTAM, 2015)

The K Group Nearest-Neighbor Query on Non-indexed RAM-Resident Data. - George Roumelis; Michael Vassilakopoulos; Antonio Corral; Yannis Manolopoulos (GISTAM (Selected Papers), 2015)

Bulk-Loading xBR ^+ -trees. - George Roumelis; Michael Vassilakopoulos; Antonio Corral; Yannis Manolopoulos (MEDI, 2016)

New plane-sweep algorithms for distance-based join queries in spatial databases. - George Roumelis; Antonio Corral; Michael Vassilakopoulos; Yannis Manolopoulos (GeoInformatica, 2016)

Bulk Insertions into xBR ^+ -trees. - George Roumelis; Michael Vassilakopoulos; Antonio Corral; Yannis Manolopoulos (MEDI, 2017)

Efficient query processing on large spatial databases: A performance study. - George Roumelis; Michael Vassilakopoulos; Antonio Corral; Yannis Manolopoulos (J. Syst. Softw., 2017)

Δόμηση σημειακών δεδομένων και επεξεργασία χωρικών ερωτημάτων - George Roumelis (2017)

An Efficient Flash-aware Spatial Index for Points. - Anderson Chaves Carniel; George Roumelis; Ricardo Rodrigues Ciferri; Michael Vassilakopoulos; Antonio Corral; Cristina Dutra de Aguiar Ciferri (GEOINFO, 2018)

Spatial Batch-Queries Processing Using xBR ^+ -trees in Solid-State Drives. - George Roumelis; Michael Vassilakopoulos; Antonio Corral; Athanasios Fevgas; Yannis Manolopoulos (MEDI, 2018)

An efficient algorithm for bulk-loading xBR+-trees. - George Roumelis; Michael Vassilakopoulos; Antonio Corral; Yannis Manolopoulos (Comput. Stand. Interfaces, 2018)

Bulk-loading and bulk-insertion algorithms for xBR+-trees in Solid State Drives. - George Roumelis; Athanasios Fevgas; Michael Vassilakopoulos; Antonio Corral; Panayiotis Bozanis; Yannis Manolopoulos (Computing, 2019)

Indexing Points on Flash-based Solid State Drives using the xBR+-tree. - Anderson Chaves Carniel; George Roumelis; Ricardo Rodrigues Ciferri; Michael Vassilakopoulos; Antonio Corral; Cristina Dutra de Aguiar Ciferri (J. Inf. Data Manag., 2019)

Parallel processing of spatial batch-queries using xBR+-trees in solid-state drives. - George Roumelis; Polychronis Velentzas; Michael Vassilakopoulos; Antonio Corral; Athanasios Fevgas; Yannis Manolopoulos (Clust. Comput., 2020)

Porting disk-based spatial index structures to flash-based solid state drives. - Anderson Chaves Carniel; George Roumelis; Ricardo Rodrigues Ciferri; Michael Vassilakopoulos; Antonio Corral; Cristina Dutra de Aguiar Ciferri (GeoInformatica, 2022)