« Vorherige
Nächste »
Datenquelle
- CiNii EN12
- CiNii JP10
- Crossref21,600
- DBLP918
- Europe PubMed Central7,128
- Google Books656
- METADATA.UB7,248
- MLA217
- Manual10,407
- OPENSCIENCE.UB1,148
- PubMed6,945
- RePEc112
- Web of Science (Lite)17,086
- arXiv5,145