http://books.google.com/books?vid=ISBN9781921496325
4859
http://books.google.com/books?vid=ISBN9781921496004
1054
http://books.google.com/books?vid=ISBN1740950321
18
http://books.google.com/books?vid=ISBN9781921496127
1
CiteRank - project for automatic evaluation of the sources in Wikipedia articles.