« Vorherige
Nächste »
Datenquelle
- Crossref18,519
- Web of Science (Lite)15,508
- Europe PubMed Central6,850
- PubMed6,802
- Manual4,140
- METADATA.UB3,409
- arXiv1,149
- OPENSCIENCE.UB1,025
- DBLP308
- MLA88
- RePEc57
- CiNii EN12
- CiNii JP10
- Google Books2