Towards a Cross-Border Reference Architecture for the Once-Only Principle in Europe: An Enterprise Modelling Approach. - Jaak Tepandi; Eric Grandry; Sander Fieten; Carmen Rotuna; Giovanni Paolo Sellitto; Dimitris Zeginis; Dirk Draheim; Gunnar Piho; Efthimios Tambouris; Konstantinos A. Tarabanis (PoEM, 2019)

The Technical Challenges in OOP Application Across the European Union and the TOOP OOP Architecture. - Jaak Tepandi; Carmen Rotuna; Giovanni Paolo Sellitto; Sander Fieten; Andriana Prentza (The Once-Only Principle, 2021)