http://books.google.com/books?vid=ISBN0721629210
650
http://books.google.com/books?vid=ISBN9780721629216
2
http://books.google.com/books?vid=ISBN9781437703146
1
http://books.google.com/books?vid=ISBN9780323319676
1
CiteRank
CiteRank - project for automatic evaluation of the sources in Wikipedia articles.