S. Krolak-Schwerdt, P. Orlik, и B. Ganter. Studies in Classification, Data Analysis, and Knowledge Organization, том 4 из Information systems and data analysis, Springer, Berlin, (1994)
S. Krolak-Schwerdt, P. Orlik, и B. Ganter. Studies in Classification, Data Analysis, and Knowledge Organization, том 4 из Information systems and data analysis, Springer, Berlin, (1994)