Peter Buneman, Egor V. Kostylev, Stijn Vansummeren. Annotations are relative. In Wang Chiew Tan, Giovanna Guerrini, Barbara Catania, Anastasios Gounaris, editors, Joint 2013 EDBT/ICDT Conferences, ICDT '13 Proceedings, Genoa, Italy, March 18-22, 2013. pages 177-188, ACM, 2013. [doi]
Abstract is missing.