Table 1. Main information of the investigation.
| Description | Results |
| Main Information About Data | |
| Timespan | 1945:2024 |
| Sources (Journals, Books, etc.) | 1139 |
| Documents | 2351 |
| Annual Growth Rate % | 5.23 |
| Document Average Age | 12.1 |
| Average citations per doc | 15.99 |
| References | 61160 |
| Document Contents | |
| Keywords Plus (ID) | 13689 |
| Author's Keywords (DE) | 4582 |
| Authors | |
| Authors | 8878 |
| Authors of single-authored docs | 156 |
| Author's Collaboration | |
| Single-authored docs | 174 |
| Co-Authors per Doc | 4.97 |
| International co-authorships % | 11.82 |
| Document Types | |
| Article | 2207 |
| Book chapter | 28 |
| Conference paper | 116 |