« Vorherige
Nächste »
Datenquelle
- Crossref20,762
- Web of Science (Lite)15,881
- METADATA.UB10,727
- Europe PubMed Central6,951
- PubMed6,899
- Manual4,295
- OPENSCIENCE.UB2,963
- arXiv1,190
- DBLP353
- MLA94
- RePEc57
- CiNii EN12
- CiNii JP10
- Google Books2