Hereth, J., Stumme, G., Wille, R. & Wille, U. (2000). Conceptual Knowledge Discovery and Data Analysis. In B. Ganter & G. Mineau (ed.), Conceptual Structures: Logical, Linguistic, and Computational Issues , Vol. 1867 (pp. 421--437) . Springer . ISBN: 978-3-540-67859-5.