« Vorherige
Nächste »
Datenquelle
- CiNii EN12
- CiNii JP10
- Crossref20,765
- DBLP353
- Europe PubMed Central6,952
- Google Books2
- METADATA.UB10,727
- MLA94
- Manual4,295
- OPENSCIENCE.UB2,963
- PubMed6,899
- RePEc57
- Web of Science (Lite)15,881
- arXiv1,190