S. Owen, R. Anil, T. Dunning, und E. Friedman. Manning Publications Co., Manning Publications Co. 20 Baldwin Road PO Box 261 Shelter Island, NY 11964, First Edition, (2011)
X. Qi, und B. Davison. Proceedings of the 15th ACM international conference on Information and knowledge management, Seite 228--237. New York, NY, USA, ACM, (2006)
R. Angelova, und G. Weikum. Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval, Seite 485--492. New York, NY, USA, ACM, (2006)
D. Shen, Z. Chen, Q. Yang, H. Zeng, B. Zhang, Y. Lu, und W. Ma. Proceedings of the 27th annual international ACM SIGIR conference on Research and development in information retrieval, Seite 242--249. New York, NY, USA, ACM, (2004)