因此，下一篇与此主题相关的论文可能需要很长时间才能发表。
It may therefore be some time before the next paper appears on the subject.
方法：采用文献分析法，对论文发表的刊物、时间、作者所在地和单位、论文的主题和类别进行分析。
Methods:The publication and time of publishing articles, places and units of author, subject and classification of articles were analysised in using the method of article analysis.
方法：采用文献分析法，对论文发表的刊物、时间、作者所在地和单位、论文的主题和类别进行分析。
Methods:The publication and time of publishing articles, places and units of author, subject and classification of articles were analysised in using the method of article analysis.
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