« Vorherige
Nächste »
Datenquelle
- METADATA.UB12,819
- Crossref10,736
- Web of Science (Lite)8,442
- Manual4,399
- Europe PubMed Central3,570
- PubMed3,517
- OPENSCIENCE.UB3,498
- arXiv2,538
- DBLP473
- Google Books319
- MLA121
- RePEc47
- CiNii EN1
- CiNii JP1