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Data sources, storage, computing resources and services are entities on Grids that require mechanisms for publication and lookup. A discovery service relies on efficient lookup to locate these objects from names or attributes. And on large-scale grids, these should be scalable and be able to support range queries and multicriteria searching. Trie-based approaches like the PHT and DPT, enable sophisticated queries while providing resilience to failures. In this paper, we propose a more efficientdoi:10.1109/e-science.2007.6 dblp:conf/eScience/ChanA07 fatcat:csiykdruzvcttk24silqbp7tz4