3D Point Cloud Semantic Modelling: Integrated Framework for Indoor Spaces and Furniture. - Florent Poux; Romain Neuville; Gilles-Antoine Nys; Roland Billen (Remote. Sens., 2018)

CityJSON Building Generation from Airborne LiDAR 3D Point Clouds. - Gilles-Antoine Nys; Florent Poux; Roland Billen (ISPRS Int. J. Geo Inf., 2020)

From consistency to flexibility: A simplified database schema for the management of CityJSON 3D city models. - Gilles-Antoine Nys; Roland Billen (Trans. GIS, 2021)

From consistency to flexibility: Handling spatial information schema thanks to a middleware in a 3D city modeling context. - Gilles-Antoine Nys; Roland Billen (Trans. GIS, 2023)

Digital Twins for cities: Analyzing the gap between concepts and current implementations with a specific focus on data integration. - Imane Jeddoub; Gilles-Antoine Nys; Rafika Hajji; Roland Billen (Int. J. Appl. Earth Obs. Geoinformation, 2023)

PEMAP: An intelligence-based framework for post-event management of transportation systems. - Nourhan Bachir; Hassan Harb; Chamseddine Zaki; Michel Nabaa; Gilles-Antoine Nys; Roland Billen (Comput. Electr. Eng., 2023)

Data integration across urban digital twin lifecycle: a comprehensive review of current initiatives. - Imane Jeddoub; Gilles-Antoine Nys; Rafika Hajji; Roland Billen (Ann. GIS, 2025)