Song, Yang, Zhuang, Ziming, Li, Huajing, Zhao, Qiankun, Li, Jia, Lee, Wang-Chien, Giles, C. Lee: Real-time automatic tag recommendation. In: SIGIR '08: Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval. New York, NY, USA : ACM, 2008. - ISBN 978-1-60558-164-4, S. 515--522