They compared the number of citations scientific papers received when available only in print with the number received by the same articles once they became freely available online.

他们比较了仅以印刷版方式发行的科学论文的被引用数量以及同一篇论文免费在网上公布之后的被引用数量。

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The researchers found that online availability increased citations of recently published articles by around eight per cent.

这组科学家发现在网上公开论文可以增加近来出版的论文的被引用数量约8%。

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He also found a fall, once a journal was online, in the number of papers in it that got any citations at all.

ECONOMIST: Is the web narrowing scientists�� expertise?

Indeed, he predicts that for the average journal today, five extra years' worth of online availability will cause a precipitous drop in the number of articles receiving one or more citations from 600 to 200 a year.

ECONOMIST: Is the web narrowing scientists�� expertise?