您可以下载XJ手册和一篇技术论文(位于WWW 2005)。
You can download the XJ manual and a technical paper (presented at WWW 2005).
之前一些研究结果显示，免费论文的下载和被引用次数高于那些需要付费订阅的论文，霍顿的研究模型便基于这些研究。
Houghton's model relies on studies suggesting that free papers are downloaded and cited more often than papers available only by subscription.
迄今为止，胡拉姆研究小组所撰写的关于艾达的论文已经被下载九万多次。
To date, there have been more than 90, 000 downloads of the scientific paper his research group wrote about Ida.
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