1. Complexity of answering queries using materialized views;Abiteboul,1998
2. Finding equivalent rewritings in the presence of arithmetic comparisons;Afrati,2006
3. Answering queries using materialized views with disjunctions;Afrati,1999
4. Answering queries using views with arithmetic comparisons;Afrati,2002
5. On containment of conjunctive queries with arithmetic comparisons;Afrati,2004