« Vorherige
Nächste »
Datenquelle
- METADATA.UB26,694
- Crossref23,534
- Web of Science (Lite)17,136
- Manual10,467
- OPENSCIENCE.UB9,377
- Europe PubMed Central7,151
- PubMed6,968
- arXiv5,170
- DBLP919
- Google Books667
- MLA219
- RePEc112
- CiNii EN12
- CiNii JP10