N. Agarwal, H. Liu, L. Tang, und P. Yu. WSDM '08: Proceedings of the international conference on Web search and web data mining, Seite 207-218. New York, NY, USA, ACM, (2008)
N. Agarwal, H. Liu, L. Tang, und P. Yu. WSDM '08: Proceedings of the international conference on Web search and web data mining, Seite 207--218. New York, NY, USA, ACM, (2008)