1. Relational database systems with zero information loss;Bhargava;IEEE Transactions on Knowledge and Data Engineering,1993
2. Time Granularities in Databases, Data Mining and Temporal Reasoning;Betteni,1998
3. The historical relational data model (HRDM) and algebra based on lifespans;Clifford,1993
4. On an algebra for historical relational databases: two views;Clifford;Proceedings of ACM SIGMOD International Conference on Management of Data,1985
5. On completeness of historical data models;Clifford;ACM Transactions on Database Systems,1994