J. Kunkel, B. Loepp, и J. Ziegler. Proceedings of the 22Nd International Conference on Intelligent User Interfaces, стр. 3--15. New York, NY, USA, ACM, (2017)
C. Ziegler, L. Schmidt-Thieme, и G. Lausen. Proc. of the 2nd ACM SIGIR Semantic Web and Information Retrieval Workshop (SWIR '04), Sheffield, UK, (2004)