TY  - BOOK
AU  - Kaufman,Leonard
AU  - Rousseeuw,Peter J.
TI  - Finding groups in data: an introduction to cluster analysis 
SN  - 0471878766
PY  - 1990///
CY  - New York
PB  - John Wiley & Sons
KW  - Cluster analysis
N1  - 'A Wiley-Interscience publication.'; Includes index; Bibliography : p. 320-331
ER  -