research tools for references

13 Jan

google scholar

http://scholar.google.fr/schhp?hl=fr&as_sdt=2000&as_vis=1

Us National library of medicine and National institutes of health (PUBMED)

http://www.ncbi.nlm.nih.gov/pubmed/advanced

scientific research tool, contains also pre print material

http://www.scirus.com/

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