Ranking of major issuing countries and institutions (TOP 10)
| Ranking | Main issuing countries | Main issuing institutions | ||||
|---|---|---|---|---|---|---|
| Frequency | Centrality | Countries | Frequency | Centrality | Institutions | |
| 1 | 8 | 0.29 | AUS | 4 | 0.05 | National University of Singapore |
| 2 | 8 | 0.02 | USA | 3 | 0.35 | Alfred Wegener Institute |
| 3 | 6 | 0.01 | DEU | 3 | 0.02 | Consejo Superior de Investigaciones Cientificas (CSIC) |
| 4 | 4 | 0.03 | BEL | 3 | 0.31 | ETH Zurich |
| 5 | 4 | 0.28 | CHN | 3 | 0.00 | Helmholtz Association |
| 6 | 4 | 0.02 | CH | 3 | 0.02 | Edith Cowan University |
| 7 | 4 | 0.30 | ENG | 3 | 0.00 | University of Queensland |
| 8 | 4 | 0.07 | SGP | 3 | 0.31 | Max Planck Society |
| 9 | 3 | 0.04 | ESP | 3 | 0.00 | King Abdullah University of Science and Technology |
| 10 | 3 | 0.34 | SWE | 2 | 0.03 | Bangor University |
| Ranking | Main issuing countries | Main issuing institutions | ||||
|---|---|---|---|---|---|---|
| Frequency | Centrality | Countries | Frequency | Centrality | Institutions | |
| 1 | 8 | 0.29 | AUS | 4 | 0.05 | National University of Singapore |
| 2 | 8 | 0.02 | USA | 3 | 0.35 | Alfred Wegener Institute |
| 3 | 6 | 0.01 | DEU | 3 | 0.02 | Consejo Superior de Investigaciones Cientificas (CSIC) |
| 4 | 4 | 0.03 | BEL | 3 | 0.31 | ETH Zurich |
| 5 | 4 | 0.28 | CHN | 3 | 0.00 | Helmholtz Association |
| 6 | 4 | 0.02 | CH | 3 | 0.02 | Edith Cowan University |
| 7 | 4 | 0.30 | ENG | 3 | 0.00 | University of Queensland |
| 8 | 4 | 0.07 | SGP | 3 | 0.31 | Max Planck Society |
| 9 | 3 | 0.04 | ESP | 3 | 0.00 | King Abdullah University of Science and Technology |
| 10 | 3 | 0.34 | SWE | 2 | 0.03 | Bangor University |
Source(s): Created by authors