Ranking of major issuing countries and institutions (TOP10)
| Ranking | Main issuing countries | Main issuing institutions | ||||
|---|---|---|---|---|---|---|
| Frequency | Centrality | Countries | Frequency | Centrality | Institutions | |
| 1 | 5 | 0.08 | CHN | 2 | 0.02 | Shanghai Jiao Tong University |
| 2 | 2 | 0.00 | PRT | 2 | 0.00 | Universidade de Lisboa |
| 3 | 2 | 0.01 | AUS | 1 | 0.00 | Royal Belgian Institute of Natural Sciences |
| 4 | 2 | 0.10 | POL | 1 | 0.00 | Zagazig University |
| 5 | 2 | 0.10 | NLD | 1 | 0.00 | University of Gdansk |
| 6 | 2 | 0.16 | ENG | 1 | 0.09 | Centre National de la Recherche Scientifique |
| 7 | 1 | 0.00 | SWE | 1 | 0.00 | Delft University of Technology |
| 8 | 1 | 0.00 | USA | 1 | 0.00 | Gebze Technical University |
| 9 | 1 | 0.00 | TUR | 1 | 0.00 | University of Rhode Island |
| 10 | 1 | 0.00 | NOR | 1 | 0.00 | Wageningen University and Research |
| Ranking | Main issuing countries | Main issuing institutions | ||||
|---|---|---|---|---|---|---|
| Frequency | Centrality | Countries | Frequency | Centrality | Institutions | |
| 1 | 5 | 0.08 | CHN | 2 | 0.02 | Shanghai Jiao Tong University |
| 2 | 2 | 0.00 | PRT | 2 | 0.00 | Universidade de Lisboa |
| 3 | 2 | 0.01 | AUS | 1 | 0.00 | Royal Belgian Institute of Natural Sciences |
| 4 | 2 | 0.10 | POL | 1 | 0.00 | Zagazig University |
| 5 | 2 | 0.10 | NLD | 1 | 0.00 | University of Gdansk |
| 6 | 2 | 0.16 | ENG | 1 | 0.09 | Centre National de la Recherche Scientifique |
| 7 | 1 | 0.00 | SWE | 1 | 0.00 | Delft University of Technology |
| 8 | 1 | 0.00 | USA | 1 | 0.00 | Gebze Technical University |
| 9 | 1 | 0.00 | TUR | 1 | 0.00 | University of Rhode Island |
| 10 | 1 | 0.00 | NOR | 1 | 0.00 | Wageningen University and Research |
Source(s): Created by authors