Finally there are open-access archives, where organizations such as universities or international laboratories support institutional repositories.
最后一种是开放式档案：一些组织，例如大学或者国际实验室赞助一些机构资料库。
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One frustrating problem is the paywall that scholarly archives like JSTOR throw up to non-institutional users, but even the very fact that results turn up in web searches is often useful on its own.