Reinhard Pichler, Emanuel Sallinger, Vadim Savenkov. Relaxed notions of schema mapping equivalence revisited. In Tova Milo, editor, Database Theory - ICDT 2011, 14th International Conference, Uppsala, Sweden, March 21-24, 2011, Proceedings. pages 90-101, ACM, 2011. [doi]
Abstract is missing.