Garfield E
Nature. 1976 Dec 16;264(5587):609-15. doi: 10.1038/264609a0.
In 1974 the Science Citation Index (SCI) covered about 401,000 articles and communications in 2,443 scientific and technical journals. They cited about 3.2 million different publications an average of 1.8 times each. In this article some results of an analysis of more than 5 million citations in the references of journal articles indexed for the SCI in 1974 are presented and an attempt is made to interpret of those results in the light of an earlier study of 1969 citations.
1974年，《科学引文索引》（SCI）涵盖了2443种科技期刊上的约40.1万篇文章和通讯。它们引用了约320万种不同的出版物，平均每种被引用1.8次。本文展示了对1974年SCI索引的期刊文章参考文献中500多万条引文的分析结果，并尝试根据对1969年引文的早期研究来解读这些结果。
