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Krause B , Schmitz C , Hotho A , Stumme G. The anti-social tagger–detecting spam in social bookmarking systems. In: Proceedings of the International Workshop on Adversarial Information Retrieval on the Web (AIRWeb). Held in conjunction with the International World Wide Web Conference (WWW). Beijing; 2008. pp. 61–68.
Krebs V. The social life of routers, applying knowledge of human networks to the design of computer networks. Internet Protoc J 2000; 3:14–25.