Curtis P. Kolovson;Marie-Anne Neimat;Spyros Potamianos
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Papyrus GIS demonstration
SIGMOD '93 Proceedings of the 1993 ACM SIGMOD international conference on Management of data
Constraint-based Interoperability of Spatiotemporal Databases*
Geoinformatica
Query Optimization in the Presence of Foreign Functions
VLDB '93 Proceedings of the 19th International Conference on Very Large Data Bases