*[http://www.istis.unomaha.edu/isqa/haworth/isqa3300/fs009.htm Extendible Hashing] in English, 개념.코볼 구현소스
 *[http://www.cis.ohio-state.edu/~hakan/CIS671/Hashing.ppt Hash PPT]기본 개념 잡을려면.. 이걸보세엽.
 *[http://oopsla.snu.ac.kr/classes/filestruct/tp/chap12.ppt Hash PPT]이것두 역쉬..
 *[http://perso.enst.fr/~saglio/bdas/EPFL0525/sld009.htm Extendible Hashing]

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["ProjectGaia"]