http://citation.dbpedia.org/hash2/39bce272c5f246b803f4ba87e93c7e9d617708bec6adb11bded641fe8fb7fba0
590
http://books.google.com/books?vid=ISBN8301052872
3
http://books.google.com/books?vid=ISBN8301144394
1
CiteRank
CiteRank - project for automatic evaluation of the sources in Wikipedia articles.