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R. Cole, P. Eklund, и G. Stumme. Principles of Data Mining and Knowledge Discovery. Proc. PKDD 2000, том 1910 из LNAI, стр. 367-374. Heidelberg-Berlin, Springer, (2000)
G. Stumme, и K. Wolff. Advances in Database Technologies. Proc. Intl. Workshop on Data Warehousing and, том 1552 из LNCS, стр. 117-128. Heidelberg, Springer, (1999)
P. Eklund, B. Groh, G. Stumme, и R. Wille. Conceptual Structures: Logical, Linguistic, and Computational, том 1867 из LNAI, стр. 453-467. Heidelberg, Springer, (2000)