Articles In Academic Journals

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Year	Title
1993	Improving known solutions is hard.  computational complexity. 168-185.
1992	Relativization: a revisionistic retrospective.  Bulletin of the EATCS. 144-153.
1991	Improving known solutions is hard.  Automata, Languages and Programming. 381-392.

Conference Papers

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Year	Title
1992	On the complexity of incremental computation.  172-180.