J. Illig, A. Hotho, R. Jäschke, и G. Stumme. Knowledge Processing and Data Analysis, том 6581 из Lecture Notes in Computer Science, стр. 136--149. Berlin/Heidelberg, Springer, (2011)
F. Suchanek, M. Vojnovic, и D. Gunawardena. Proceeding of the 17th ACM conference on Information and knowledge management, стр. 223--232. New York, NY, USA, ACM, (2008)
P. Venetis, G. Koutrika, и H. Garcia-Molina. Proceedings of the fourth ACM international conference on Web search and data mining, стр. 835--844. New York, NY, USA, ACM, (2011)