Table 1.
Top 10 countries/regions publishing the most papers in the field.
| Rank | Country | No of Articles | Citations | Average Article Citations | H-index | Frequence | MCP_Ratio | Centrality |
|---|---|---|---|---|---|---|---|---|
| 1 | USA | 341 | 5387 | 15.80 | 36 | 20.20% | 0.177 | 0.06 |
| 2 | PEOPLES R CHINA | 172 | 5423 | 31.53 | 29 | 10.19% | 0.151 | 0 |
| 3 | INDIA | 164 | 4402 | 26.84 | 30 | 9.72% | 0.159 | 0 |
| 4 | ENGLAND | 162 | 3435 | 21.20 | 28 | 9.60% | 0.355 | 0.03 |
| 5 | ITALY | 162 | 4015 | 24.78 | 31 | 9.60% | 0.183 | 0.06 |
| 6 | SAUDI ARABIA | 72 | 654 | 9.08 | 15 | 4.27% | 0.346 | 0.03 |
| 7 | IRAN | 68 | 559 | 8.22 | 13 | 4.03% | 0.23 | 0 |
| 8 | GERMANY | 64 | 1450 | 22.66 | 19 | 3.79% | 0.268 | 0 |
| 9 | SPAIN | 62 | 874 | 14.10 | 14 | 3.67% | 0.114 | 0.03 |
| 10 | AUSTRALIA | 60 | 505 | 8.42 | 13 | 3.55% | 0.257 | 0.24 |