Andreas Hutflesz, Hans-Werner Six, Peter Widmayer. Twin Grid Files: Space Optimizing Access Schemes. In Haran Boral, Per-Åke Larson, editors, Proceedings of the 1988 ACM SIGMOD International Conference on Management of Data, Chicago, Illinois, June 1-3, 1988. pages 183-190, ACM Press, 1988. [doi]
Abstract is missing.