Figures & data
Table 1. Top 10 most productive journals, 1997–2014.
Table 2. Top 10 most productive institutions, 1997–2014.
Table 3. Top 30 most frequency of author keywords, 1997–2014.
Table 4. Comparison between G7 and BRIC countries on the top 20 most frequency of author keywords, 1997–2014.
Table 5. Top 20 most used single words in title, 1997–2014.
Table 6. Top 30 most frequency of KeyWords Plus, 1997–2014.