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Fig. 2 | Globalization and Health

Fig. 2

From: Environmental and health-related research on application and production of rare earth elements under scrutiny

Fig. 2

Publication development over time. A Number of REEeh articles, number of citations, and citation rate. B Number of REEeh articles and articles per 100,000 SCIE (Science Citation Index Expanded) articles. The horizontal gray curve shows that the proportion of REEeh articles to all SCIE articles is nearly constant until 1990, while the steep increase after 1990 shows that the proportion of REEeh articles increases much more than the number of SCIE articles

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