Click on the links below to view some examples:
http://www.ncbi.nlm.nih.gov/pubmed/17913213
http://cat.inist.fr/
http://www.springerlink.com/
http://www.authorstream.com/
Click on the links below to view some examples:
http://www.ncbi.nlm.nih.gov/pubmed/17913213
http://cat.inist.fr/
http://www.springerlink.com/
http://www.authorstream.com/