DDX 元素、属性和值都记录在 DDX 参考中，见 参考文献。
The DDX elements, attributes, and values are documented in the DDX reference in Resources.
这些索引记录着一篇文章被作为参考文献引用的次数，从而估量其影响力。
They record how often one article is cited as a source by others, and thus measure a paper's influence.
为了避免这种情况，一些学者建议大学生们应熟悉引用书目与参考文献的规范，在写论文伊始就记录好文献出处。
In order to avoid such a situation, scholars suggest students familiarize themselves with citation and referencing styles, and start taking notes of their sources at an early stage.
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