C. Ziegler, L. Schmidt-Thieme, und G. Lausen. Proceedings of the 2nd ACM SIGIR Semantic Web and Information Retrieval Workshop, Sheffield, UK, (Juli 2004)
C. Ziegler, S. McNee, J. Konstan, und G. Lausen. Proceedings of the 14th international conference on World Wide Web, Seite 22--32. New York, NY, USA, ACM Press, (2005)
K. Zhou, S. Yang, und H. Zha. Proceedings of the 34th international ACM SIGIR conference on Research and development in Information Retrieval, Seite 315--324. New York, NY, USA, ACM, (2011)
E. Zangerle, C. Bauer, und A. Said. Proceedings of the Fifteenth ACM Conference on Recommender Systems, Seite 794-795. New York, NY, USA, ACM, (September 2021)
K. Xu, K. Zhan, und S. Gao. ICCBR-2010 Workshop Proceedings: Computer Cooking Contest Workshop, Seite 219-228. Bridgewater, New Jersey, USA, (Juni 2010)