- Web of Science
- Scopus
- MathSciNet
- SISSA Preprints archive
- zbMATH - ZentralblattMATH
- Jahrbuch Project (Jahrbuch über die Fortschritte der Mathematik) 1868-1942
- INSPIRE (high-energy physics)
- arXiv
- ADS - the NASA Astrophysics Data System
- International Nuclear Information System (INIS-IAEA)
- PubMed (MEDLINE Database)
- PubChem
- External preprint archives
- Web portal of the research product of the SISSA, University Trieste and University of Udine