J. Illig, A. Hotho, R. Jäschke, и G. Stumme. Knowledge Processing and Data Analysis, том 6581 из Lecture Notes in Computer Science, Springer Berlin / Heidelberg, 10.1007/978-3-642-22140-8_9.(2011)
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)