Y. Wang, L. Wang, Y. Li, D. He, и T. Liu. Proceedings of the 26th Annual Conference on Learning Theory, том 30 из Proceedings of Machine Learning Research, стр. 25--54. Princeton, NJ, USA, PMLR, (июня 2013)
H. Zhang, M. Korayem, E. You, и D. Crandall. Proceedings of the fifth ACM international conference on Web search and data mining, стр. 33--42. ACM, (2012)
P. Ziegler, C. Kiefer, C. Sturm, K. Dittrich, и A. Bernstein. 10th International Conference on Extending Database Technology (EDBT 2006), том 3896 из Lecture Notes in Computer Science, стр. 59-76. Munich, Germany, March 26-31, Springer, (2006)