« Vorherige
Nächste »
Datenquelle
- Crossref20,968
- Web of Science (Lite)16,639
- Manual10,037
- Europe PubMed Central7,016
- PubMed6,853
- METADATA.UB6,781
- arXiv4,859
- OPENSCIENCE.UB1,114
- DBLP753
- Google Books636
- MLA205
- RePEc112
- CiNii EN12
- CiNii JP10