S. Bloehdorn, P. Cimiano, и A. Hotho. From Data and Information Analysis to Knowledge Engineering: Proceedings of the 29th Annual Conference of the German Classification Society (GfKl 2005), March 9-11, 2005, Magdeburg, Germany, том 30 из Studies in Classification, Data Analysis, and Knowledge Organization, стр. 334--341. Springer, Berlin--Heidelberg, Germany, (2006)