G. Feng, T. Liu, Y. Wang, Y. Bao, Z. Ma, X. Zhang, и W. Ma. Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval - SIGIR \textquotesingle06, ACM Press, (2006)
R. Jäschke, и S. Rudolph. Contributions to the 11th International Conference on Formal Concept Analysis, стр. 19--34. Technische Universität Dresden, (мая 2013)