ResearchGate - Access scientific knowledge, and make your research visible
PubMed.gov - PubMed comprises more than 29 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
PubPharm - PubPharm is a search plattform tailored for pharmaeceutical researchers.
Biohunter - Biohunter is a one-stop portal for literature search, batch-download PDFs and reference manager
Hubmed - An alternative interface to the PubMed medical literature database.
Google Scholar - Google Scholar is a freely accessible web search engine that indexes the full text of scholarly...