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Dengyin Zhang, Hao Wu and Chunling Chen, 2013. A Spatial Database Index Method Based on Doubletree Structure. Information Technology Journal, 12: 363-368.
DOI: 10.3923/itj.2013.363.368
URL: https://scialert.net/abstract/?doi=itj.2013.363.368
DOI: 10.3923/itj.2013.363.368
URL: https://scialert.net/abstract/?doi=itj.2013.363.368