Dear colleagues I am looking for these articles: 1 - Frank,O. (1976) "Comparing Classifications by the use of the Symmetric Class Difference" in Proceedings in Computational Statistics eds J. Gordesch and P. Maeze Wurzburg Physica Verlag pp. 84-96 2 - Cohen,J. (1960) "A coefficient of agreement for nominal scales" Educational and Psychological Measurements Vol.20 pp. 37-46 3- Mirkin, B. G. and Chernyl, L.B (1970) "Measurement of the Distance Between Distinct Partitions of a Finite Set of Objects" Automation and Remote Control Vol. 31 pp. 786-792 4- Green, P.E. and Rao, V. R. "A note on Proximity Measures and Cluster Analysis" Journal of Marketing Research Vol. 6 pp. 359-364 Anybody can help me? Thanks in advance Best regards Helena ================================================================= Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at http://jse.stat.ncsu.edu/ =================================================================